000158 ‘金 Bull. Malacol. R.O. C. l!輝在啟事設 13 : 43 … 49 (1 987)

ANATOMY OF HEMIPHAEDUSA SIMILARIS (H. ADAMS) AND H PSEUDOSHERIDANI (ZILC頁) FROM SOUTHERN T AIW AN (PULMONAτA:)

Kuan.min Chang

Oral Surgery , College of Medicine , National Taiwan University

關鍵詢:眼見綱一;燼管蝸牛科，解話，蝸牛。

Key words: Gastropod 益a-Clausiliìda皂， Anatomy ， Lands泊在i l.

Hemíphaedusa simílaris w在S origina1ly tweleve specimens of var. ventríosa are co1- described by H. Ada訟 s (1 8級) with the speci­ lected from Ken-ting, Pingtung county, south mens from severallocalíti 的 of southern Taiwan. cape of Taiwan. The snails were immersed in Other species from K在ngkou ， Manchou district, boiling water a few seconds and were separated south c墨pe of Taiwan which are smaller, vio1et. their soft parts from shel1s in water.τhey were brownish, general1y convexed sheU with dis幽 dissected in F AA solution under a dissecting continued apertura1 margin are reported as var. mlcroscope. ventriosa and another species from mountain­ ous area of Kaohsiung county which are more E造船ult large , pale colored, cl在vate formed shell with most inflated penultimate who泣， funnel 趴在ped H similaris widened apertural margin are reported 在 s var. (Plate 1) clava by Schmacker 是nd Böttger (1891). In 1955, Kur。這在路星星的ted that the dwarf type of SheU: Hemiphaedusa similaris var. ventriosa m 在y be a Medium in si肘， solidy, fusiform , pale synonym of H. pseudosheridani (Kuroda 1955). brownish with oblique striation on surface. Hence it may be sti1l question that al1 of these obtuse. Succeeding whoris increased in species from southern Taiwan are identified as diameter reachin惡 2.9 mm at the fourth similaris in spite of their various size and shel1 which is about 59% of th忠誠e l1 width. Whorls feature. Further studies of various similaris 9 in number. 昆在ch whorl convex with rather species (include holotype group) on their soft deep . Base of last whorl roundy. Aper­ anima1s is requested. But so far no 汶口dy has ture subvertical, pyriform with duplic在 te aper­ been done on their anatomy except the chro­ tura1 lips. margin whitish, thickened, mosome by Burch (1965) and Lo & Ch是ng expanded 在 nd reflected. Superior lame l1a (1 975). The reproductive system and obliq間， marginal and connected with spiral of Hem伊haedusa similaris and it8 variation lamella. Inferior lamella flat , deeply situated ventriosa were reported here for the first t泊流. interiorward, Subcolumel1ar lamella emerged to apertural margin and extended distinct1y to 規 aterials and Methods outward. Principal plica lon惡﹒ Upper pa1at a1 p1ica short, 10wer palata1 p1ica indistinguishab1e Thirteen specimens of H. similaris and from outside. Lune l1a straight, extended dis- 44 Kuan-mÎn Chan囂

tinct1y below upper palatal plica, thus forming idy, purplísh.brown to li在ht brown in color "J" shaped mark (如今 lA). shell. Whorl 8-9 in number, each whorl Clausilium long tongue shaped, 2.4 mm weakly convex with shallow suture. Upper part long, 0.9 mm wide with parallel margìns. Apex of apire elongately conic with obtuse apex. of clausìlium roundy with thickened callu.s but Succeedin露 whorls increased in diameter reach­ neither nodule nor notch fOIτnation. Deep ing 1.9 mm at the fourth whorl which is about notch existed at the proximal end of the margin 60% of the shell width. Penultimate whorl of columellar side (Fig. 2A, Table 1). largest in diameter. Shell surface is sculptured with fine irregular oblique st 泌的 Aperture Reproductive system: subvertical, lon皂 pear shape. Peri鈍。me whitish, Penial sheath was moderately long and well not widely reflected but funnel shaped with developed. Because of the constriction at the sharp margin, marginally, only in two speci. junction, the epìphallus is conspicuous. lts mens of them discontinued at wall is more whitish and thickened 風 Penial superior of aperture. Four specimens of them retractor attached to the posterior part of have duplicated peristome. Superior lamella epiphallus. Vas deferens separated from sperm­ raised 泌的?妙， connected inwardly with spiral oviduct at 3 mm 盈nterior from the end of lamel1a. Inferior lamella weak, seated deeply. prostate gland. lt was a long slender duct , Subcolumellar lamellar emerged weakly on attached loosely to vagina and held closely to peristome. Principal p1ica lon各 Lunella arcu. anterior end of penial sheath by a fibrous ated weakly to medial, unitin草 superiorly with tissue. Vagina was short and large in diameter. the short upper palatal plica, thus forme 丘 or Oviduct was longer than vagina but slender. markin惡 of “J" on the 益nterior-lateral of last Stalk of spermatheca is same as oviduct in whorl. Lower palatal plica vestigial (民車. lB). length an位 diameter ， branched out more Clausilium tongue shaped ，直rcu孟ted strong勵 thickened diverticulum. Spermethecal duct was ly to posteri肘， 1.6 mm lon草， 0.8 mm wide with equal to its stalk in length but rather slender. paralleled margi肘 Apex of clausilium nar­ Spermatheca was long oval-shape 在nd slight rowed with thickened callu 丸 nodule and notch reddish in color. The length of diverticulum formation. Deep notch also existed 在 t the was longer than the combined len在ths of sp缸" proximal end of the margin of columellar side matherca an這 spermathecal duct (Fig. 3人 (Fig. 2B, T在ble 1). Table 2). Reproductive system: Radula: Penial sheath well developed. Epiphal1us Radula ribbon was 1.5 mm long, 0.6 mm more whitish 孟nd same or smaller in diameter wide, carrying 79 rows of teeth. The radular than pe紛紛 sheath but its borderline is in­ formula. is 23+C+23. Lateral teeth transformed conspicuous. Penial retr 盈ctorslender ， attached into more oblique and more long c耶pid st在此， to the posterior one third of epiphallus. Vas ing from the 8th tooth (Fig. 4A). deferens separated from spermoviduct at an­ terior end of prostate gland. It is 10玲， slender H. pseudosheridani and attached 100紛 ly to vagin盈 but tíghtly to (Plate 1) anterior end of the penial sheath. Vagina lon盔， lar皇e in diameter. Oviduct shorter and slender Shell: th如 vagina. Spennathecal stalk relatively long, Small siz 皂， spindle to clav益 te shaped, sol- slender. Spermathecal duct also slender. A結atomy of Hem 如haedusa simílaris and H. pseudosheridani 45

Spermatheca long oval in shape , more whitish. formation and reproductive system which had Length of diverticulum was same as the com 勵 lon孟er vagi訓， longer spermathecal stalk 訟d bined lengths of spermatheca and spermath齡在l diverticulun that ís same length as the com­ duc t.了wo ovas are found at spermoviduct bined len草ths of spermatheca and spermathec誰 i without e訟bryo(刊g. 3B, Table 2). duct. Hence var. ventriosa 益。uld be the unique species “紅 pseudosheridani" . R.adula:

R在dula ribbon was carrying 76 rows of Acknowledgement teeth. The radular formula is 17+C+ 17. Lateral teeth transformed into more ob1ique and lon孟 cuspid startin墨 from the 7th tooth (Fìg. 4B). 1 am grateful to 仙. Wen-chun萃的lang for presenting of specimens and Prof. T. Hab 日， M r. Remarks K. Mae 血， Mr. M. Kaw 在na for providing various One kìnd of sma\l clausiliid snail from references and suggestions for this study. southern Taiwan which was identified as Hemiphaedusa sheridani by Schmacker and References 日創 tger (1 891) was corrected as Hemiphaedusa pseudosheridani by the same authors later but without descrìption. Other while among the Ad在 ms ， H. 1866. ，。“ cription of fifteen new clausilíids from southern Taiwan, Kuroda 勻的 ies of land and fresh water shells from (l941) identified míddle sized 0 bese one Formo泊， collected by Robert Swinhoe. as Hem學haedusa similaris (日. Adams) 在nd Es午， Consul at Taiwan in that island. smaller, slender one as Hemiphaedusa sheridani Proc. Zoo. Soc. London p. 316. (Pfeiffer). For the latter one Zilch (1 954) Burch, J. B. 196 丘， Chromosome number and firstly described as Euphaedusa pseudosheri­ systematics in euthyneuran snails. Proc. dani. Afterward Pseudosheridani was placed 1st. Europe. Malacol. Congr. 1962. 215 … under tÍle genus Hemiphaedusa by Kuroda 241. (1 955). Sìmultaneously Kuroda sug酷的ted that Kuroda, T. 194 卜， A catalogue of molluscan the dwarf type of Hemiphaedusa similaris shells , from τaiwan (Formos吵 with des­ ventriosa is 在 synonym of H. pseudosheridani. cription of new species. Mem. Fac. Sci. The specimens presented here were consi泣ered Agr., Taihoku.lmp. Univ. , 22:65-216. 的 Hem伊haedusa pseudosheridani (Zilch) by Kuroda, T. 1955. About “Zi1ch, A. Die Typen a presence of a sma\l obese spìndle shaped she\l, und Typoide des Nàturmuseums Sencken­ sha\low suture, "J" shaped palatal armature, berg. 12: , Clausiliidae (1): Ph餘， deeply seated, weak inferíor lamella and nar- dusína皂， Neninae. Archiv 舟r Mollusken. row, funnel sh在ped peristome. kunde... Bd. 83, Nr. .13:1… 63, pls, 1-4 Presented tweleve specimens, $0 called as (1 5. Apr. 1954). Venus , 18(4):3 1O. the dwarf type of H. similaris ventriosa allied Lo , C. T. & Chang, K. M 罵 1975. ， Chromosom 居 to 挂 nother presented specìes; 丘 similaris in numbers of some c1ausiliid snails from shape, color of the shell and palatal armature. Taiw 在工1. Bull. Chín. Malacol. Soc. 2:95- But differed from the latter not only in shell 101 size , also in shell characters such 在 s finer Schm 在 ck缸， V. B. & Bδttger ， O. 189 1.、 Neue oblique striae of the surface, rather sharpened M在 teriallen zur charakteristik und geogra­ clausí1ium apex with nodule, notch phischen Verbreitun惡 chinesischer und 46 Kuan耐minChang

japanischer Binnenmollllsken Il. Natur. Bl. Natllr-mllsellm Senckenberg. 12: Mollllsca, Malakozoo. Gesell. 話 :171-173. Clausiliidae (1): phaedus趴紹， Nenìnae. Zì1ch, A. 1954., Die Typen und Typoide des Archil人 Moll. 83(1 /3):44. Taf. 3 , Fig. 54.

Table 1. Compar坊。n of conchometric車組d conchomorphology of Hem 壘'1haedusa similaris 組d 論miphaedusa pseudosheridani (in mm)

H. similaris n 1 =13 H. pseudosheridani n =12

Shell

始終 gth 18.15 (1 6.2-20.7) 11.68 (9.7-12.45) width 4.85 (4.5-5.0) 3.15 (2.9-3.4)

length/wi這位1 3.74 3.71 whorl number 9-10 8-9

4W1 2.會 (2.1 … 3 .4) 1.9 (1.3-2.3) 4W/SW3 0.59 0.6

Aperture

length 4.30 (3.75-4.8) 2.91 (2.7 一 3.1) width 3.30 (2.9-3.8) 2.30 (2.2…2.5) APL/APW4 1.30 1.265

She\l striae on surface “stinct 0 blique 洽談 e irregular oblique 車urface co1 or pale brownish purplish brown or light brown

whorl convex with rather deep 紹給re weakly convex with sha\low suture

Aperture total duplicate on1y 4 c 鵬 s duplicate

subcolumella主 lamella emerged distínctly emerged weakly

Clausilium long tongue shape. Apex tongue shape. Apex narrow, ro程結進 y ， cal1us (+) notch (…) rather sharp, callus (+) notch no挂ule (一) (+) nodule (+)

': Sample size. 1: Width of 4th whorl. 3: Shell width. 。 Aperture len喜 th to aperture width ratío. Anatomy 0 1' HC lI1 iphaedusa similaris and H pscudosheridani 47

Table 2. Measurement of reproductive system and radula of Hemiphaedusa similaris and Hemíphaedusa pseudosherídaní . n mnu H. similaris H pseudosheridani AB* n 不 *=3 n** =3

Penial sh 巳 ath ps 9.0 6.5 EpiphallllS ep 4.0 2.5

Vas de ferem、 vd 8.5 7.1

Va1! Ìna va 1. 0 3.2 Ovidllct od 3.5 2.9 Sperma thcca sp 2.5 x 1.0 1.4xO.7 Spcrmathecal duct sd 3.5 28 Spcrmathccal stalk ss 3.5 4.7 Divcrticlllllm di 8.0 4.5 DI/(SP+SD) 1.3 3 1.07

Radllla Ribbon sizc 1. 5 xO.6 1. 6x 0.8

Ro\V nllmbe.r 79 76 Forlllllla 23+C+23 17+C+17

Morc l o n 且 . obliq lIC cu spid s tart ing from 8th tooth 7th tooth P1atc 1. Hemiphaedllso similaris 18mm x 4.8mm (r 也 ht) and Hcmiphae­ * Abbrcviation in Fi g.. 3 dllso pseudosheridani 12mm x 郁* Sarnple siz 已 3.1mm (left)

A B

l-ïg. 1. ßody whor1 (fronta1 and lateral vicws) 0 1' (A) Hemiphaedllso similaris and (ß) Hemiphaeduso ps e lldosh 刊 'i dani 48 Kuan-minCh認嘉

℃ Fi車. 2. Clausilium of (A) Hemíphaedusa símilaris and (B) Hemfphae正fusa pseudosheridani. A 8 • Notch formation

A B

Fig.3. Reproductive system of (入) Hemiphaedusa similaris and (B) Hemiphaedusa pselldosherida l1 i

n 句句 知 S e 3 c F BR 司有可哼哼哼 ~fiJ ~ A

守嗚嗚詩句有兮 s Fig. 4. Radula of (A) Hemiphaedusa simílaris and (B) Hemiphaedusa pseudosheridani. Anatomy of Hemiphaedu紛紛nilaris and H. pseudosheridani 49

白口燈管蝸牛及似謝氏燈管蝸牛的解剖

張寬敏

大醫學院口腔外科

H. Adams (1 866) 對兩壘灣數麗麗 臼口煙管蝸牛之小型豆豆 ventriosa

中、小製;總管蝸牛總指命名 Hemipha 叫usa 的十二值標本在外殼形態上，不但個體小 similaris fi故新選音記載。然後 Schmacker ，殼表呈紫梅色或褐色，沒有萌額的斜線 and B 谷 ttger( 1891) 多~其中的小型J 煙管蝸牛 路主詣，各總}靜僅報按 1好提及淺的總會接等

(牌東縣攜手 H 鄉港口度)命名;在捶 ventrio 銷 與自口煙管車站牛有明顯的差異。 加上像自

對大型煙管蝸牛(高雄縣山地產)命名亞種 口總管蝸牛有三還殼口緝的餾體僅四個， clava 0 尤其草莓 ventriosa 由黨器(1 955) 姑且全數都挂下輪被之露糊不顯薯，

指情與 Zilch (1 95 是)命名記誠的耕種很難 伸至殼口經外線 O 解吾吾上{w，謝氏體管蝸牛

民煉管螞 't'Hemiphaedusa pseudosheridani 的目索要是，盲歸去是壞與精囊及精欒管長度

相悶。自臼口煙管蝸牛及 Wl謝氏理智蝸牛 的韓、相等長，聞報的末端肥!寧主設穎拉狀，

未曾有人們三灑軟盤解劑，著者在本文報告 ~育紹祖等諸點，與自口;體管蝸牛有研黨員的

其醉倒所見及檢討其系親的忱竄。即 t-t屏 差異。據一l::.述顯明之三是駒，原來被認定莖

臼 n 煙管蝸牛十三個體 鍾的 ventriosa 截然與白口煙管蝸牛模式

及用縣大坪?真沒墾了海岸碼 1單位謝氏煙管 種簡體肘有別，本文同意黑間(1 955) 的

蝸牛卡三個體作形態學及解剖學的先較。 言弱點。

原來被 Schmacker ~生 B öttger(1 8 91 )