In Vietnam Gioáng Gheï Charybdis

The genus Charybdis (Crustacea: Portunidae) in Viet Nam

Item Type Journal Contribution

Authors Nguyen, Van Chung

Download date 26/09/2021 22:50:28

Link to Item http://hdl.handle.net/1834/9267 Collection of Marine Research Works, 2002, XII: 167-178

THE GENUS CHARYBDIS (CRUSTACEA: PORTUNIDAE) IN VIETNAM

Nguyen Van Chung Institute of Oceanography (Nha Trang)

ABSTRACT 14 species of Charybdis were determinated in Vietnamese coastal waters, including two new records, all species were described, identified by key and illustrated on pictures.

GIOÁNG GHEÏ CHARYBDIS (CRUSTACEA: PORTUNIDAE) ÔÛ VIEÄT NAM

Nguyeãn Vaên Chung Vieän Haûi Döông Hoïc (Nha Trang)

TOÙM TAÉT Baøi baùo ñaõ ñöa ra 14 loaøi thuoäc gioáng gheï Charybdis, hoï cua Bôi (Portunidae) ôû Vieät Nam, bao goàm 2 loaøi môùi boå sung cho khu heä cua bieån Vieät Nam. Moãi loaøi ñeàu ñöôïc ñònh teân khoa hoïc, moâ taû hình thaùi, phaân boá, hình veõ vaø khoùa xaùc ñònh loaøi.

I. INTRODUCTION II. MATERIALS AND METHODS

The genus Charybdis de Haan, All specimens concerned in this 1833, which is considered after paper were collected from the surveys Thalamita because of their close of Marine Study Program conducted in relationship (Stephenson and Hudson, the coastal provinces of Vietnam in the 1957), has been monographed by Leen periof of 1970 - 2001 and deposited at (1938). the Oceanographic Museum and the In Vietnam, there have been very Depart. of Aquaculture Biotechnology of few studies on Charybdis. The studies the Institute of Oceanography (IO) in of Serene (1937), Dawydoff C. (1952), Nha Trang and the Museum of Hai Starobogatov (1972), N. V. Chung Phong Branch of IO. They were (1978, 1980, 1991, 1995) focusing identified by the methods of Sakai T. mainly on taxonomy and distribution of (1940), Stephenson W. (1957) and the genus. Some species (Charybdis Miyake S. (1998). feriatus, C. natator, C. miles... are the III. RESULTS most abundant and widely distributed. The C. hongkongensis is almost Key to species of the genus observed only in Tonkin Gulf. This Charybdis paper presents in detail and discusses 1(2) Basal antennal joint does join about the taxonomy of the genus front, hence antennal flagellum stands Charybdis in Vietnam. in upper portion of orbit... 167 C. (Gonioneptunus) bimaculata 17(18) Propodus of cheliped more 2(1) Basal antennal joint joins front, inflated, carapace with conspicuous excluding antennal flagellum from crooss-like mark... orbit… 3 C. (Charybdis) feriatus 3(8) Posterior border of carapace 18(17) Propodus of cheliped not straight, posterodistal border of arm of inflated, carapace without crooss-like cheliped spinuous 4 mark... 4(5) Epibranchial tooth shorter than C. (Charybdis) miles other anterolateral teeth... 19(16) Propodus of cheliped with 5 C. (Goniohellenus) truncata spines ... 5(4) Epibranchial tooth longer than C. (Charybdis) affinis others... 6 20(13) First anterolateral tooth not 6(7) Epibranchial tooth slightly longer truncated... 21 than the others, sixth segment of male 21(22) Second anterolateral tooth much abdomen with lateral margin slightly smaller than the first ... conver ... C. (Charybdis) anisodon C. (Goniohellenus) hongkongensis 22(21) Second anterolateraltooth 7(6) Epibranchial tooth distinctly subequal to first... 23 longer than the others, sixth segment 23(24) Natatory leg with spinose of male abdomen with lateral margin carpus... strongly conver ... C. (Charybdis) hellerii C. (Goniohellenus) vadorum 24(23) Natatory leg without spinose 8(3) Posterior border of carapace carpus ... 25 curved, posterodistal border of arm of 25(26) Median lobule of lateral part of cheliped not spinous ... 9 orbital ventral margin acutely 9(12) Cardiar region with conspicuous dentiform... ridge ... 10 C. (Charybdis) lucifera 10(11) Median and first lateral front 26(25) Median lobule of lateral part of teeth more protruding than second orbital ventral margin not dentiform... lateral front teeth ... C. (Charybdis) annulata C. (Charybdis) variegate Charybdis (Gonioneptunus) 11(10) Median and first lateral front bimaculata (Miers, 1886) (Fig. 1) teeth not longer than second front Gheï Bi-Ma teeth... C. (Charybdis) natator Goniosoma variegatum var. bimaculatum Miers 1886: 191, pl. 15, fig.3 12(9) Cardiar region without ridge... 13 Charybdis subrogate Rathbun, 1902: 28 13(20) First anterolateral tooth more Charydis (Gonioneptunus) bimaculata and less truncated... Alcock 1899: 69 14(15) Merus of chelipeds with 2 spines Carapace covered with a coat of on anterior margin... 14 downy fur and scattered granules. C. (Charybdis) callianassa. Cardiac and mesobranchial regions 15(14) Merus of chelipeds with 3 or provided with granulated elevations. A more than 3 spines anterior margin..16 distinct spot of dark-red coloration 16(19) Propodus of chelipeds with 4 presents on each mesobranchial region. spines... 17 Anterolateral margin with 6 teeth, the first the largest, the second 168 the smallest, to the fifth gradually both sides angled. Basal segment of decreasing in size. antennal armed with a granulated Front divided into 6 teeth, the crest. middle two lower in position but more Front divided into obtuse teeth; projecting, the outermost pair smaller the middle two rather prominent, the and tending to unite the supraorbital outermost one smaller, deeply teeth. separated from the adjacent one. Chelipeds asymmetrical, merus Chelipeds asymmetrical, merus with 3 spines on the anterior margin, a with 3 spines on the anterior margin spinule at the end of the posterior and spinules on the posterior margin; margin. Carpus with a long spine at surface covered with granules arranges the inner angle and 3 spines on the in transversecarenae. Carpus with 3 outer surface. Produces with 2 distinct dorsal granular carinae. granulated carinae and 2 spines on Propodus covered with 7 granulated dorsalsurface, 3 granulated ridges on carinae in all on the surface; dorsal the outer and 1 on the inner surface. surface armed with 3 spines. Merus of Merus of natatory legs with a long natatory legs with a spinule at subend spine at subtip of the posterior margin; of the posterior margin; propodus propodus with smooth posterior bearing about 8 spinules on the margin. posterior margin. Size: Carapace breadth of 25-35 mm. Size: Carapace breadth of 45-55 mm. Habitat: Sandy, muddy-sandy or Habitat: Muddy and muddy-sandy broken shelly bottoms, 2 - 35 m deep. bottom, 5- 60 m deep. Conservation: Inst. Ocean. in Nha Conservation: Inst. Ocean. in Nha Trang. Trang. Distribution: South Africa, India, Distribution: India, Australia, Japan, Korea, Japan, Australia, China, China, Indonesia, Philippines, Malaysia, and Singapore. Vietnam: Malaysia, Singapore. Vietnam: Tonkin Tonkin Gulf, coast of Central Vietnam. Gulf, coast of Central and Southern Vietnam. Charybdis (Goniohellenus) Charybdis (Goniohellenus) truncata (Fabrics, 1798) (Fig. 2) hongkongensis (Shen 1934) (Fig. 3) Gheï Traùn -Thaúng Gheï Hoàng -Koâng Portunus truncata Fabricius 1798: 365 Charybdis (Goniohellenus) hongkongensis, Thalamita truncata H. Milne -Edwads 1934: 46, figs. 11-12 1834: 463 Carapace covered with a coat of Goniosoma ornatum A. Milne - Edwards 1861: 376 downy fur, regions well defined; Charybdis (Goniohellenus) truncata metagastric, cardiac and mesobranchial Balss 1922: 103 regions marked with obvious Carapace covered with downy fur, granulated elevations. regions well defined; metagastric, Anterolateral margin cut into 6 cardiac and mesobranchial regions teeth; the first two obtuse and set marked with granual patches. closer to each other; the last one longer Anterolateral margin divided into 6 than the others. Antennal basal teeth, decreasing in size, the last one segment with granulated ridge. the smallest. Posterior margin straight, 169 Front divided into 6 teeth, the teeth, the first produced anterolateral, middle four subequal but the two the second to fourth gradually central ones more prominent; the increasing in size, the fifth smaller outermost one smaller, separated from than the fourth, the epibranchial tooth the inner one by a V-shaped notch, the longest. Antennal basal segment Chelipeds asymmetrical; merus with 3 provided with a low granulated crest. curved spines, tip directed lateral and Front divided into 6 teeth, the with a spine at the end of the posterior middle two lower in position, the next margin; propodus marked with 3 pair larger than the outermost pair and granulated ridges on the outer surface, deeply separated from each other. in which the lowest one extends to the Chepipeds covered with a tip of the immovable finger, dorsal squamiform process. Merus with 2 surface with 3 spines, the base of the teeth on the anterior margin and 1 teeth with depressed granules; fingers spinule at the end of the posterior relatively long, armed with strong margin. Carpus with 1 stout spine at teeth, alternately large and small . the inner-distal and 2 spines on the Natatory legs with merus longer than outer side. Propodus marked with 6 broad, bearing one long spine at carinae, of which 2 on the dorsal posterodistal angle; propodus with surface. Merus of natatory legs with 2 spines on the posterior margin. spines on the posterior margin; Size: 3 specimens, Carapace breadth of propodus with 6-7 spines on the 40-48 mm. posterior margin. Habitat: Sandy and sandy-muddy Size: Carapace breadth of 24-30 mm. bottoms, 10-80 m deep. Habitat: 3 specimens. Sandy and Conservation: Zoolozical Institute, muddy bottoms, 5-60 mm. Academy of Sciences of the Russia. Conservation: Hai Phong Branch of Distribution: Australia, China, Institute of Oceanography. Tonkin Gulf of Vietnam. Distribution: Red Sea, India, Indonesia, Philippines, and China. Charybdis (Goniohellenus) Vietnam: Tonkin Gulf and the coast of vadorum (Alcock 1899) (Fig. 4) center. Gheï Va-Do Charybdis (Charybdis) variegata Charybdis (Goniohellenus) hoplites var. (Fbricius 1798) (Fig. 5) vadorum Alcock 1899: 64 Gheï Va-Ri C. (Goniohellenus) sinensis Gordon 1931: 534 Portunus variegatus Fbricius 1798: 364 C. (Goniohellenus) vadorum Chopra 1935: Charybdis variegata de Haan 1835: 42 493 C. (Goniosoma) variegata Chopra 1935: 488 Carapace covered granular C. (Charybdis) variegata Leene 1938: 84 patches, one on each protogastric Carapace covered with dense region, 2 Y-shaped patches: one on the pubescence; cardiac region slightly mesogastric and the cardiac- intestinal convex; mesobranchial region with 2 region, and one on the meso- and ridges. Anterolateral margin divided metabranchial region; protogastric and into 6 teeth, the first with outer epibranchial ridges present. margin slighly concave, the second Anterolateral teeth divided into 6 somewhat smaller than the former,

170 third to fifth subequal in size, the last Carapace covered with a coat of one large and spiniform. downy fur, distributed with granules Front divided into 6 teeth, the near antero-lateral surface; Cardiac middle two the most prominent and region with a pair ridge and lower in position, the one next to them mesobranchial region with 3 pairs. the largest and broader, the outermost Antero-lateral margin divided into 6 one the smallest and sharper. Dorsal teeth, the first truncate at tip, second innerorbital tooth larger than the front to fourth subequal in size, the last one teeth. spiniform. Chelipeds asymmetrical, merus Front divided into 6 teeth, the with 3 teeth on the anterior margin, middle four subequal in size, obtuse at carpus covered with granules on the the tip. Basal segment of antenna dorsal and outer surface, inner-distal provided with low granulated crest. angle bearing a stout spine, the outer Chelipeds asymmetrical; merus surface with 2 spinules and 3 ridges. with 3 spines on the anterior margin; Propodus inflated, covered with scale- carpus covered with depressed shaped granules and short hairs, its granules, armed with a stout spine at dorsal surface armed with 5 spines. inner angle and 3 spinules on the outer Merus of natatory legs a little longer surface; propodus also covered with than broad, with spines in subend of depressed granules, the dorsal surface the posterior margin; propodus with with 4 stout spines and 2 smaler spinules on the posterior margin. spines. Size: 4 specimens. Carapace breath of Size: 2 specimens, Carapace breadth 27-38mm. of 82-100 mm. Habitat: Muddy, Muddy-sandy Habitat: Sandy, muddy - sandy bottoms, 10-40 m deep. bottoms, 5 - 20 m deep. Conservation: Inst. Ocean. in Nha Conservation: Inst. Ocean. in Nha Trang. Trang. Distribution: Red Sea, India, Distribution: East and South Africa, Australia, Japan, China, Philippines, Red Sea, India, Japan, China, Malaysia, Singapore, and Thailand. Indonesia, Philippines, Malaysia, Vietnam: Tonkin Gulf and Nha Trang Singapore and Thailand. Vietnam: bay. Tonkin Gulf, coast of center. Charybdis (Charybdis) natator Charybdis (Charybdis) callianassa (Herbst 1789) (Fig. 6) (Herbst 1789) (Fig. 7) Gheï Na-Ta Gheï Ca-Li Cancer callianassa Herbst 1789 Cancer natator Herbst 1789: 40 Charybdis (Goniosoma) callianassa Chopra Thalamita natator Milne-Ewards 1834: 463 1935: 489-491. Portunus (Charybdis) natator de Haan Charybdis (Charybdis) callianassa Leen 1850: 10 1938: 81-84. Charybdis granulatus Stimpson 1858: 39 Carapace covered with downy fur; Goniosoma natator A. Milne-Ewards 1861: besides the usual transverse ridges, one 370 pair on the cardiac and branchial Charybdis (Charybdis) natator regions, one oblique granular ridge Leen 1938: 93 between the cardiac and branchial 171 regions. Antero-lateral margin divided Carapace smooth, surface with a into 6 teeth; the first with outer cross - shaped light mark. Meso- and margin concave, serratet; the second to metagastric regions each with a pair of the fourth serratet on the anterior and obscure carinae, epibranchial ridge the posterior margin; the last the presents. acutest, serratet on the anterior Anterolateral margin divided into margin. 6 teeth, the first truncate and concave Front divided into 6 teeth; middle in the median of the anterior margin, pair the most prominent; the one next the last one the smallest but acuter and to them broader and shorter; the more projecting. outermost one the smallest and acutest, Front divided into 6 teeth, the separated by a deep notch from the middle four subequal in size, outermost inner one. teeth narrower and sharper. Chelipeds asymmetrical, merus Chelipeds asymmetrical, merus with 2 spines in distal part of the armed with 3 strong teeth on the distal anterior margin, carpus with a spine at half of anterior margin and with the inner-distal angle and 3 spinules denticles on the proximal half, carpus on the outer surface, propodus with 3 with a strong spine at the inner distal spines on the dorsal surface. Merus of angle and 3 spinules on the outer natatory legs with an acuminate spine surface, propodus with 4 teeth on the at distal end of the posterior margin, dorsal surface and 2 spines at the propodus smooth on the posterior inner-distal angle, outer surface of the margin. propodus bearing 2 ridges. Size: 3 specimens, Carapace breath of Size: 2 specimens, Carapace breadth of 28 - 38 mm. 90 - 110 mm. Habitat: Sandy - muddy and shelly Habitat: Stony or rocky coast, 5 - 30 m bottoms, 5 - 15 m deep. deep. Conservation: Inst. Ocean. Conservation: Inst. Ocean. in Nha Distribution: India, Pakistan, Trang. Australia, Malaysia, Singapore, Gulf of Distribution: Africa, India, Siam. Vietnam: Tonkin Gulf, coast of Madagascar, Australia, Japan, China, Center and South. Malaysia, and Singapore. Vietnam: Tonkin Gulf, the coast of Central and Charybdis (Charybdis) feriatus South Vietnam. (Linnaeus 1758) (Fig. 8) Gheï Chöõ Thaäp (Cua Thaäp Aùc) Charybdis (Charybdis) miles Cancer feriatus Linnaeus 1758: 627 (de Haan 1835) (Fig. 9) Oceanus crucifer de Haan 1835: 40 Gheï Mi-Le Goniosoma cruciferum A. Milne - Edwards Portunus (Charybdis) miles de Haan 1835: 1861: 371 41 Charybdis (Charybdis) cruciata Leene Goniosoma miles A. Milne-Edwards 1861: 1938: 24 -27 378, 385 Charybdis cruciata Rathbun 1910: 362; Charybdis (Goniosoma) miles Alcock 1899: Sakai 1939: 403 62-63 Charybdis (Charybdis) feriatus Stephenson Charybdis (Charybdis) miles Leene 1938: and Rees 1967: 10 38

172 Carapace covered with short front, gastric and epibranchial regions; tomenta, with the usual transverse posterior half of the surface behind the ridges, cardiac and mesobranchial epibranchial region without a ridge. regions with granular patches, Anterolaterior margin divided into 6 mesobranchial region with a light teeth; the first truncate, slightly yellow round spot near the posterior incurved; the second to the fifth margin. Anterolateral margin divided gradually increasing in size; the last into 6 teeth, the first one truncate, one smaller, spiniform and projecting outer side concave, the last one sideways. spiniform. Front divided into 6 teeth, the Front divided into 6 acute teeth, middle two more prominent. two middle ones more produced, the Chelipeds smooth; merus with 3 one next to them a little broader, the teeth on the anterior margin; carpus outermost one narrower. with a stout spine at inner angle and 3 Chelipeds elongate; merus with 4 spinules on the outer surface. Propodus strong teeth on the anterior margin; marked with 3 ridges on the outer carpus with the usual spines and 3 surface, the same as the inner surface, granulated ridges; propodus marked dorsal surface with 2 ridges and 5 with 6 granulated ridges, dorsal surface spines. Merus of natatory legs armed with 4 acute spines. Merus of natatory with a spine at the posterodistal end. legs armed with an acute spine at the Size: 2 specimens, Carapace breadth end of the posterior margin, propodus of 30 -42 mm. with 2-3 spinules on the posterior Habitat: Muddy-sandy, sandy-muddy margin. bottoms, 5 - 25 m deep. Size: 3 specimens, Carapace breadth of Conservation: Inst. Ocean. in Nha 50 - 68 mm. Trang. Habitat: Sandy and muddy bottoms, 5 Ditribution: India, Indonesia, China, -75 m. Malaysia, Singapore, and Thailand. Conservation: Inst. Ocean. in Nha Vietnam: coast of Center and South. Trang. Charybdis (Charybdis) anisodon Distribution: India, Australia, Japan, (de Haan 1850) (Fig. 11) Philippines, China, Malaysia, and Gheï Raêng Khaùc Singapore. Vietnam: Tonkin Gulf, the coast of Central and South Vietnam. Portunus anisodon de Haan 1850 : 42 Charybdis (Charybdis) affinis Goniosoma anisodon A Milne-Edwards 861: Dana 1852 (Fig. 10) 381 - 382 Gheï A-Phi Charybdis anisodon Balss 1922: 105 - 106 Charybdis (Charybdis) anisodon 1938: 64 - Charybdis affinis Dana 1852: 85 67 Charybdis (Goniosoma) affinis Alcock 1899: Carapace smooth and bare, 56 Charybdis (Goniosoma) barneyi Gordon regions indistinct, with usual carinae. 1930: 522 Antero-lateral margin divided into 6 Charybdis (Charybdis) affinis Leene 1938: teeth; the first tooth obtuse triangular; 35 the second distinctly smaller than the Carapace covered with short first; the sixth longer and larger than tomenta, with the usual transverse in the others and projecting sideways. 173 Front divided into 6 teeth; the Cheliped asymmmetrical; merus middle four with distal end truncated with 3 strong teeth on anterior margin; and shallowly separated from each carpus covered with 3 carinae on the other; the lateral one with tip round outer surface, a spine at the inner and deeply separated from the inner distal angle; propodus with 3 obscure one. ridges on the outer surface, armed with Chelipeds asymmetrical; merus 5 spines. Natatory legs stout; merus with 2 obtuse teeth; capus with a stout with a spine at the posterodistal angle; inner-distal spine and 3 spinules capus with a spine on the posterior situated on the outer side; propodus margin, both anterior and posterior with a spine on the dorsal margin. margins fringed with long hairs. Propodus of natatory legs with 3 -6 Size: 2 specimens, Carapace breadth of denticles on distal portion of the 48 - 80 mm. posterior margin. Habitat: Intertidal area, rocky coast Size: 2 specimens, Carapace breadth of and on coral reefs. 62 - 80 mm. Conservation: Inst. Ocean. in Nha Habitat: Muddy, sandy - muddy, 5 - 25 Trang. m deep. Distribution: Africa, Red Sea, Conservation: Inst. Ocean. in Nha Mediterranean, Madagasca, Australia, Trang. Japan, China, Malaysia, Singapore. Distribution: Red Sea, Madagascar, Vietnam: coast of Center and South. Australia, Japan, Indonesia, China, Charybdis (Charybdis) lucifera Philippines, Malaysia, Singapore, and (Fabricius 1798) (Fig. 13) Thailand. Vietnam: Tonkin Gulf, coast Gheï Lu-Ci of Center. Portunus lucifer Fbricius 1798: 364 Charybdis (Charybdis) hellerii Goniosoma luciferum Henderson 1893: 374 (A. Milne-Edwards 1867) (Fig. 12) Charybdis (Charybdis) lucifera Leene 1938: Gheï He-Le 57 – 60 Goniosoma hellerii A. Mile-Edwards 1867: Carapace with microscopic 282 granules marked the usual trasverse Charybdis (Charybdis) hellerii Leene 1938: ridges, posterior surface behind 44 – 49 epibranchial ridge without any ridge. Carapace only scattered Anterolateral margin divided into 6 pubescence on areas among proximal teeth, the first to the fifth gradually parts of the anterior teeth and the increasing in size, the last the hollow portion behind orbit, marked smallest, spiniform. with usual transverse carinae. Front divided into 6 teeth; the Anterolateral margin divided into middle four subequal in size, but the 6 acute teeth, the first and the second outer one sharper and somewhat closer and subequal in size, the last one laterally directed; the outermost one elongate and spiniform. narrower, more prominent than the Front divided into 6 teeth, the innerorbital tooth. middle ones more obtuse than the Chaliped asymmetrical; merus lateral ones, the outermost acute and with 3 spines on the anterior margin, directed anterolateral. the proximal one the smallest; Carpus

174 with a stout spine at the inner angle propodus with 5 spines on the dorsal and 3 obtuse spines on the outer surface. Merus of natatory legs with an surface; Propodus with 5 short spines acute spine at the end of the posterior on the dorsal surface. Merus of margin, propodus with 4 - 6 spines on naratory of legs with a spine at the posterior margin. subtermination , propodus bearing 4 - 7 Size: 2 specimens, Carapace breadth of serrations . 40 - 75 mm. Size: 2 specimens, Carapace breadth of Habitat: Rocky coast, 3 - 25 m deep. 80 - 98 mm. Conservation: Inst. Ocean. in Nha Habitat: Sandy - muddy bottoms, 5 - Trang. 25 m deep. Distribution: Africa, India, Sri Lanka, Conservation: Inst. Ocean. in Nha Pakistan, Tahiti, Japan, Indonesia, Trang. China, Malaysia, Singapore, Thailand. Distribution: India, Sri Lanka, Japan, Vietnam: Tonkin Gulf, coast of Center China, Indonesia, Malaysia, Singapore, and South. and Thailand. Vietnam: Tonkin Gulf, coast of South. REFERENCES Charybdis (Charybdis) annulata (Fbricius 1798) (Fig. 14) 1. Alcock A., 1899. Materials for a Carcinological Fauna of India. N. 4. The Gheï A-Nu Brachyura Cyclometopa. Part 2. A Portunus annulatus Fabricius revision of the Cyclometopa with an 1798: 364 account of the Famillies Portunidae. J. Goniosoma annulatum A. Milne-Edwards Asiat. Soc. Bengal, Vol. 68(2): 1-104. 1861: 374 2. Balss H., 1922. Ostasiatische Charybdis (Goniosoma) annulata Alcock Decapoden. IV. Die Brachyrhynchen 1899: 54 (Cancridea). Arch. Naturg, Vol. 88(11): Charybdis (Charybdis) annulata Leene 94 -166. 1938: 60 - 64 3. Barnard K. H., 1950. Descriptive Carapace smooth, convex, marked catalogue of South African decapod with the usual ridges, which are Crustacea. Ann. S. Afr. Mus., Vol. 38: 1 obscure. –837. Anterolateral margin divided into 4. Borradaile L. A., 1902 -1903. Marine 6 teeth, the first and the second Crustaceans. Fauna Geog. Maldibve smaller and obtuse at the tips, the Laccadive Archipelago. London, Vol. 1: third to sixth gradually decreasing in 191 - 208. size. 5. Chopra B., 1935. Further notes on Front divided into 6 teeth; the Crustacea Decapoda in the Indian middle and the first lateral tooth Museum. VIII. On the Decapod broadly triangular; the second lateral Crustacea collected by the Bengan pilot tooth narrowly triangular and Service off the mouth of the River separated from the first by a deep Hooghly. Brachygnatha (Oxyrhyncha notch. and Brachyrhyncha). Rec. Ind. Mus., Chelipeds asymmetrical; merus Vol. 37: 463 - 514. with 3 teeth on anterior margin; capus 6. Dai A. Y., Yang S. L., 1991. Crabs of with a spine at the inner distal angle the China Seas, pp. 196 - 250. and 3 spinules on the outer surface;

175 7. Dawydoff C., 1952. Contribution aø Collection of Marine Research Works, L’eùtude des invertebres de la faune Vol. II (1): 133 – 152. marine benthique de L’ Indochine. Bull. 16. Nguyen Van Chung, Ñao Tan Ho, L. T. Biol. de France et Belgique. Suppl., Vol. Minh, T. Thong, T. Ñ. Nam , N. V. 38. Luom, 1991. Results of the benthic 8. Gordon I. 1930. Seven new species of fauna study in the area of Thuan Hai – Brachyura from the Coasts of China. Minh Hai provinces. Collection of Ann. Mag. Nat. Hist., Vol. 10 (6): 519 - Marine Research Works, Vol. III: 137 – 525. 149.

9. Gordon I., 1931. Brachyura from the 17. Nguyen Van Chung, 2001. The Genus coasts of China J. Linn. Soc. Zool., Vol. Portunus (Crustacea: Portunidae) in 37(254): 525 - 558. Vietnam. Collection of Marine Research Works, Vol. XI: 145 – 156. 10. Gurjanova E. F., 1972. Fauna of Tonkin Gulf and its environmental condition. 18. Rathbun M. J., 1902. Japanese stalk- Acad. Sci. USSR Zool. Inst, p. 22 - 147. eyed Crustaceans. Proc. U. S. Nat. Mus., vol. 26: 23 - 55. 11. Lovett D. L., 1981. A guide to the shrimps, prawns, lobsters, and crabs of 19. Sakai T. 1939. Studies on the crabs of Malaysia and Singapore, pp. 121 - 135. Japanese. IV. Brachygnatha, Brachyrhyncha. Yokendo, Tokyo, p. 12. Miers E. J. 1886. Report on the Brachyura. Challenger Zool. Rep., Vol. 365-741. 17 (2): 1-362. 20. Serene R., 1937. Inventaire des Invertebres marin de L’ Indochine. 13. Nguyen Van Chung, Ñao Tan Ho, L. T. Minh, T. Thong, T. Ñ. Nam, N. V. Note Inst. Ocean. Nha Trang, No. 30: Luom, 1978. A review of the 1-81. preliminary surveys on benthos in 21. Shen C. J., 1934. The Crabs of Vietnam. Collection of Marine Research Hongkong. Hongkong Naturalist. Par. Works, Vol. I (1): 57-72. 4., Vol. 5(3): 37-56.

14. Nguyen Van Chung, Ñao Tan Ho, L. T. 22. Shen C. J., 1937. Notes on a collection Minh, T. Thong, T. Ñ. Nam, N. V. of swimming crabs (Portunidae) from Luom, 1978. Preliminary results of the Singapor. Bull. Raffles Mus. N., Vol. 13: benthic fauna study in Binh Cang - Nha 96-139. Trang bays. Collection of Marine 23. Starobogatov Y. T., 1972. Crabs of the Research Works, Vol. I (1): 95 – 110. intertidal zone of the Tonkin Gulf. 15. Nguyen Van Chung, N. X. Duc, P. D. Explorations of the fauna of the seas x Trong, N. H. Yet, 1980. Zoobenthos in (xviii). The fauna of the Tonkin Gulf the area of Quang Ninh - Hai Phong. and conditions of life in it, p. 333-358.

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