Reports on the Marine Biology of the Sudanese Red Sea.XXI. on The
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R. DOUGLAS LAURIE-BRACHYURA. 40 7 REPORTSon the MARINEBIOLOGY of tlie SUDANESERED SEA.-XXI. On the BRACHPURA.By R. DOUGLASLAURIE, M.A. (Oxon.), Lecturer in Embryology and Senior Demonstrator in Zoology in the University oE Liverpool. (Communicated by Prof. TV. A. HERDMAN,F.R.S., F.L.S.) (PLATES42-45 and 6 Text-figures,) [Read 18th June, 1914.1 THEcollection comprises 65 species, of which 1, Cl~lorodopsisarahica, is new to science and 8 :ire new to the Red Sea. The latter are Crptodronzia gilesii (Alc.), Notopus dorsipes (Fabr.), two varieties of Lambrus (Aulaco- lambrus) hoplonotus, Ad. & Wh., Chlorodopsis arulica, Laurie, n. sp., zlctumitus setver (de Haan), var. tonzentosus, Dana, Litocheira integra (Miers), n-lac?*oplithalmus graefei, A. M.-Edw., and Palicus whitei (Mierc). In addition, the very decided variety c*ytlierea of Clilorodiella niger (Forsli.) is new to the Red Sea, and should perhaps be reinstated in the specific rank originally given to it by Dana. Of the genera named above, 2 are new to the Red Sea fauna, namely, Litoclteira and Nolopus, and the latter is the first recorded Red Sea representative of the family Raninidae. The material in the collection helps in the elucidation of the following, in addition to other points of interest :- Thalamita cliaptalii and 1: yoissoiaii, both of Audouin and Savigny, 1826, are easily separable species. Lambrus (Aulacolambrus) lioplot~ot~is,Ad. & Wli., will, I think, be found to comprise at least two species. Macropl~tluzlmusi/ier?nis, A. M.-Ed.w., is, I believe, incorrectly considered by Alcock to 3e a synonym of 31. mii'ems, Stin. See note under izI. gm,t>fei, A. 1M.-Edw. Ophtlialntias curcirost~is(A. %l.-Edw.) is, I believe, quite a good species, easily distinguishable from 0. cervicorizis (Herbst). In addition to a series of other points of difference, I call attention to the figures which I give of the external maxillipedes in the two forms. There is in my inind a doubt as to the correctness of the single record of' 0. cervicornis from the Red Sea. My specimens confirm Nobili's suggestion t,liat notilia afiriis, Alc., 1'300, is a synonym of D. sulcatu (Forsk., 1775). I find that the supposed distinction was in part based upon a sex-difference. Chlorodopsis wood-masoni,Alc., 1898, is a doubtful synonym of C. spinips (Hell., 1861). 408 MARINE BIOLOGY OF THE SUDANESE RED SEA. The possible identity of Actcea polyaeantha (Hell., 1861) with A. peronii (H. M.-Edw:, 1834) is a point requiring investigation. A study of certain growth-changes has been made in the 40 specimens of the common species Cldorodiella niger (Forsk.), as also in Trapezia cymodoce (Herbst), and less fully in Pl~ymodiusscuZptus (A. M.-Edw.) and some others. Lupa alcocki (Nob., 1905), Herbstia corniculata, Klunz., 1906, and Maerophthalmus graefei, A. M.-Edw., 1873, have hitherto been known only by their type-specimens, and of each of the two latter species the present collection contains the first recorded male example. Caph,yra monticellii, Nob., and Lupa alcocki (Hob.), are here figured for the first time. Other interesting forms in the collection include A’ucia pulchella (A. M.- Edw.), Cypkocarcinus minutus, A. M.-Edw., and Thalamita (Thalamato?de,r) tridens, var. spifiigera (Nob.). Workers on Red Sea Brachyura will find two publications indispensable as a starting-point, namely, Alcock’s ‘ Materials for a Carcinological Fauna OF India ’ and Nobili’s ‘ Faune Carcinologique de la Mer Rouge.’ Nobili records all species known from the Red Sea at the time of his writing in 1906. Klunzinger the same year published his ‘Spitz- und Spitz- mundkrahben des Roten Dleeres,’ seen by Nobili when the latter had completed the body of his work, and reviewed briefly by him in an appendix. Klunzinger gives some useful descriptions and translations of some of Paulson’s Russian descriptions. He considers Acanthonys conso- brinus of Paulson as a synonym of A. elongatus, Miera, SO that A: consobrinm, A. M.-Edw., is to be deleted from Nobili’s,ennmeration, and he adds the Sollowing 7 species to the Red Sea fauna, namely, Simocarcinus camelus, Klunz., Eerbstia corniculata, Klunz., Herbstia contiguicornis, Klunz., Eeterocrypta petrosa, Klunz., Parthenope acuta Klunz;., Euinedonus concictol; Bouv. et Seu., and Byastenus brockii, de Man, of which the first five were new to science. Including the 8 species added by the present paper, the revised list in Table I. shows a total of 260 species recorded from the Red Sea. The Red Sea Brachyuran fauna forms an integral part of the Brachyuran fauna of the Indo-’Pacific region. To emphasize this, I have associated with ihe following complete list of Red Sea species a table showing to what extent they have been recorded in certain representative districts within the region. It will be noted froin the headings of the columns that the records are exhaustive for some districts, while for others they refer to a single important collection from the dietrict named. R. DOUGLAS LAURIE-BRACHYURA. 409 TABLEI. - - - - , he 1 r. P. K E -2 .-4 U .- .- 4. A2 & d i I'; - oi 2 m .o 00 =: =:1 .-e -." J'b, "0 :: 8 *W 130 -L F; m 2 & m - I .coh z -F i ; -g .-2 E 5 3% T 3 8 5 c55! g --4 8 z rl @ cd a rlz e 0 0 0 a- fc- 1D 0 -... 2% 30 0 2 2 2 .a- PIQ, E' $3 a-52 $ 53 .-d P n 1SL -"2 3 :: b E :E co e f! 3 .- :% -$8 -l=G% -+Pi -'5 -6 -2 -3 Tribe BRACHYURA. Subtribe Dromiacea. Soperfamily D R o Y I I D E A. Family DI~OBIIID~. Dromia drmiu (Linn.) + ................. X ... .I. X X *Dromidia unidentata (Riipp.)........... X ..I X X X Crypbodromia canaliczllata, Stimps. .. X X ... 7 X -pentugonalis (Hilg.) .............. X X ... P ... ... ,.. *- hidgendmJ, de M~R.............. X ... X X X X I.. *-gild (Ah).......................... X ... ... X ... A ... ... -grunzrlata (Kossm.) .............. X ... ... I.. ... ... ... ... ... Pseu&dromia integrifrons, Hend ...... X ... ... X ... ... ... ... ... Subtribe Oxystomata. !?>LIUily CALAPPIDB. *Calapp hepatica (Linn.) .............. X X ... X X ... X X ..* -philargius (Linn.) ................ X ... ... X ... x ... ... ..I -gallus (Herbst.) ................... X X ... X X X ... X X Matzkta baleksii, Leach .................. X ... ... X X ... ... ... ... -lzrnuris (Forsk.) ..... X ... ... X .-. ... ... ... ... Family LI~UCOSIID.~. Oreophorus horridus, Riipp. .......... X ... ... ... ... ... ... ... ... A irmia jotrsseaamei, Nob. ............. X ... ... ... ... ... ... ... ... ("- , var. ccln?~igerff,Nob. ....... X ... ... ... ... ... ... ... ... -vnhifera, Mull. ....... X ... ... X ... ... ... ... Ebalia graindata (Rupp.) . X X ... ... ... ... ... -abdominalis, Nob. ................ X ... ... ... ... ... ... ... ... -lacerfosn, Noh. ................... X ... ... ... ... ... ... ... ... -oricntalis, Kosstu. ................ X ... ... ... ... ... ... ... .. ,&cia tztberczrlosa, A. 31.-Edw. ....... X ... ... ... ... ... ... ... ... -pfeffmi (de Man) ................ X ... ... X ... ... ... ... ... *- pdckella (A. M.-Edw.) .......... X ... ... ... ... ..* ... ... ... *Perscphoiaa.ficgm(Fabr.) ............ X X ... X ... X X ... ... -aflizi6 (Bell) ...................... X ... X X ... X ... ... ... -kesslwii (Pads.) ................... X ... ... ... ... ... ... ... ... *Leucosin sigmta, Pads. ................ X ... ... ... ... ... ... ... ... -corallicola, Ale. ................... X ... ... X ... ... ... ... ... __ elaia. A. M.-Bdw. ................ X ... ... X ..I ... ... ... ... -hilark, Nob. ...................... X ... X ... ... ... ... ... ... - - __ - - - - * Included in nresent collection. f =ll. rzrmphi;, Pabr. ; see Rathbun, 1902, p. 32,and Ihle, 1913, p. 22. j. j. =,If. victor (Fabr.); me Stebbing, 1905 (1) p. 54. 410 MARINE BIOLOGY OF THE SUDANESE RED SEA. TABLEI. (con.). - - - - - r: r: 0 0 .-4 .r c 0 G. * ea .* r - e- - 0 a xm e Y 4 b ..* I 5 3 0 E 5z u3 2 ; ; -2 P &! ;uj C i0 c W .o C 0 .o ;a c.- i4 !- ;2 id i; 4 '6 is $7 Id> *c 13 :2is :<'5 g !J ;a ;; - - -40 -_id - Family LEUCOSIIDE(con.). Philyra scabriuscula (Fabr.) ........... X ... ... X ... ... ... ... ... -wariegata (Rii p.) ................. X ... ... ... ... ... ... ... ... __ wetangularis, Liers .............. X X *.. ... ... ... ... ... ... Iphinrlus spnghus, Ad. & Wb. ..... X ... ... X ... ... ... ... ... Arcania septemspinosa (Fabr.) ........ X ... ... x ... ... .I. ... ... Ixa imemis, Leach ....................... X ... ... ? ... ... ... ... ... Family DORIPPIDE. *Dorippe dorsipes (Linn.) ................. X X X X X X ... ... ... Family RAXINIDB. YXotopus dcrsi's (Fabr.) ................. X ... ... X ... ... ... ... ... Subtribe Brachygnatha. Superfamily 0 x Y P H Y N c II A. Family MAXAIIDB. *Camposcia retwsa, Law. ................. X ... ... X ... X ... ... ... *Acanthmyx elongatw, Miers ........... X ... ... ... ... ... ... ... ... Bueniapoteus (de Haan) .............. X X ... X X X X X ... Simmrcinm simpte3 (Dana) ........... X X ... X -.. ... ... X ... L- ramidatus (Hell.) .. X ... ... X ... X ... ... ... -- hcEZe~~~~%.).................... X ... ... ..- ... ... ... ... ... -camelus, Klunz. .................... X ... ... ... ... ... ... .._ ... Mmafhius mmoceros (Lstr.) ........... X X ... X X X X X ... Hyastenus t spimnu, A. M.-Edw... ... X ... ... X ... X X ... ... -tenuicwnis, Pocuck .............. X X ... X X ... ... X ... -hwkii, de Man .................... X ... ... 1 ... X X ... ... Perinca tlcmida, Dana 3 ................. X ... ... ... ... ... ... X ... Tylocarcinus dyx (Herbst) .............. X X ... X X X X ... ... *Herbstia cor>iicuEata,glunz. ........... X ... ... ... ... ..