151 247 
S. of Koh Samit, 20 fathoms, mud (1). W. of Koh Chuen, soft clay and 
mud (*/2). 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, 6—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. Gap: 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. 
Gap several specimens of Chione (Circomphalus) foliacea, Phil., at Singapore. 
Chione (Circomphalus) isabellina, Phil. 
Venus isabellina, Puivipri, Zeitschr. f. Malakozoologie, V, 1848, p. 188 (it is due to a misprint, which is 
corrected in the register, that this species is called isabillnia). 
~- — — Abbild. u. Beschreib. neuer od. wen. gek. Conchyl., II, 1851, p. 83, No. 5, pl. X, 
fig. 5 (Venus). 
— = Martini u. CHEMNITZ, Conchyl. Cabin., XI Bd., 1 Abth., p. 194, pl. 25, fig. 9. 
— — = REEVE, Conchol. icon., XIV, Venus, Sp. 112. 
— -—- — P. FiscHER, Catal. d. Moll. de ?’'Indo Chine, p. 233. 
—  Dysera, CHEMNiTz, Conchyl. Cabin., VI, 1782, p. 297, pl. 28, figs. 291—92. 
— ~ — Sowersy, Thesaurus Conchyl., UJ, p. 723, pl. 157, fig. 119. 
Anaitis isabellina, PuHivipri1, HipaLco, 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 Lem Ngob (2). 
Long. 16—26 mm. 
Distribution: — Bombay. — Annam, China, Japan, Philippines, Port Curtis, 
Sydney (W. Denison, Madras Museum). 
Metvitt & STANDEN say regarding this species:' “Perhaps best treated as a 
variety of A. foliacea” (Anaitis foliacea, Philippi). 
Chione (Ventricola) toreuma, Gould. 
Venus toreuma, Gou.p, Proceed. of the Boston Soc. Nat. Hist., II, 1850, p. 277. — Otia Conchologica, 
p. 84. 
= = = REEVE, Conchol. icon., XIV, 1863, Venus, Sp. 64. 
= = = Liscuke, 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, — Hipateo, Obras malacolégicas, I, tom. II, 1903, p. 288, No. 382. 
—  Jukesi, DesuHayes, 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 (Ventricola) Jukesi, DEsHAyES, ROMER, Malakozool. Blatter, XIV, 1867, p. 123. 
Venus crebrisulca, SowErsy, Thesaurus Conchyl., II, 1855, p. 728, pl. 161, figs. 187—89 (non LAMARCK), 
—  sculpta, DesHAyES, REEVE, Conchol. icon., loc. cit., Sp. 5 (fide EpG. SmirH). 
1 Proc. Zool. Soc. London, 1906, p. 834. 
