151 247 



S. of Koh Samit, 20 fathoms, mud (1). W. of Koh Chuen, soft clay and 

 mud (^/ä). Between Koh Chuen and Koh Chang, 15 fathoms, mud (1). N. and W. 

 of Koh Chang, 10—20 fathoms, mud (6). S. of Koh Bidang, 9 fathoms, mud (4). 

 Between Koh Kahdat and Koh Kut, fi- 10 fathoms, mud, clay mixed with sand, 

 and shells (12). S. and W. of Koh Kut, 15-20 fathoms, mud (9). 



Long. 2 — 36 mm. 



Distribution:— Singapore (Danish Exp. to Siam : one specimen in 2 — 3 

 fathoms; Sv. Gad: 5 specimens in shallow water), Mergui-Archip., Andamans, 

 Madras, Gulf of Manaar. — Philippines, China, Japan, Thursday Isl. (Semon), New- 

 Guinea, Torres Str., North Australia, Sydney. 



Note. The Danish Expedition to Siam obtained two specimens, and Mr. Sv. 

 Gad several specimens of Chione (Circomphalus) foliacea, Phil., at Singapore. 



Chione (Circomphalus) isabellina, Phil. 



Venus isabellina, Phii.iim'i, Zeitschr. f. Malakozoologie, V, 1848, p. 188 (it is due to a misprint, wliicli is 

 corrected in tlie register, that tliis species is called isabillnia). 



— — — Abbild, u. Beschreib, neuer od. wen. gek. Conchyl., III, 1851, p. 83, No. 5, pl. X, 



flg. ö (Venus). 



— — — Mautini u. Chemnitz, Conchyl. Cabin., XI Bd., 1 Abtii., p. 194, pl. 'J.'i, fig. 9. 



— — — Reeve, Conchol. icon., XIV, Venus, Sp. 112. 



— — — P. Fischer, Catal. d. Moll, de I'Indo Chine, p. 233. 



— Dysera, Chemnitz, Conchyl. Cabin., VI, 1782, p. 297, pl. 28, figs. 291— 92. 



— — — SowERBY, Thesaurus Conchyl., II, p. 723, pl. 157, Hg. 119. 

 Anuitis isabellina, Philii'fi, Hidalgo, Obras malacologicas, I, tom. II, 1903, p. 291, No. 385. 



The strand off the Mangrove at the station on Koh Chang, very shallow 

 water (4). The coast of I-,em Ngob (2). 



Long. 16—26 mm. 



Distribution: — Bombay. — Annam, China, Japan, Philippines, Port Curtis, 

 Sydney (W. Denison, Madras Museum). 



Melvill & Standen say regarding this species:' "Perhaps best treated as a 

 varietj' of A. foliacea" {Anaitis foliacea, Philippi). 



Chione (Ventricola) toreuma, Gould. 



Venus toreuma, Gould, Proceed, of the Boston Soe. Nat. Hist, III, 1850, p. 277. — Otia Conchologica, 

 p. 84. 



— — — Reeve, Conchol. icon., XIV, 1863, Venus, Sp. (i4. 



— — — LiscHKE, Japan. Meeres-Conchyl., I, 1869, p. 121, II, p. 108. 



— — — Report on the zool. collect, made during the voyage of "Alert," 1884, p. 93. 



— tourema, — Hidalgo, Obras malacologicas, I, tom. II, 1903, p. 288, No. 382. 



— Jukesi, Deshaves, Catalogue of the Conchifera in the Coll. of the British Mus., I, 1853, p. 100, No. 3. 



— — — Martini u. Chemnitz, Conchyl. Cabin., XI, 1 Abth., p. 217, pl. 35, figs. 7-9. 

 Chione (Venlricola) Jukesi, Deshayes, Römer, Malakozool. Blätter, XIV, 1867, p. 123. 



Venus crebrisulca, Sowerhy, Thesaurus Conchyl., II, 1855, p. 728, pl. 161, figs. 187—89 (non LamarckI. 



— sculpta, Deshayes, Reeve, Conchol. icon., loc. cit., Sp. 5 (fide Edg. Smith). 



' Proe. Zool. Soc. London, 1906, p. 834. 



