141 237 



S. of Koh Chuen, 30 fathoms, shells (4). Between Koh Chuen and Koh Chang, 

 15 fathoms, mud (1). West side of Koh Chang ('/.■)• W. of Koh Kut, 30 fathoms, 

 sand and mud (*/2). W. of Koh Kut, 15 fathoms, mud (1). 



Long. 6—53 mm. 



Distribution: — New Guinea, Inland Sea (Japan, Stearns), Sydney. 



All the specimens from the Gulf of Siam, like Edg. Smith's individual from 



New Guinea, have the four interrupted, brown rays from the umbo to the ventral 



side very marked; on the other hand, "the brown apices to the umbones" cannot, 



as Edg. Smith assumes, be regarded as characteristic of this species, for among 



the individuals, both the large ones and the eight young (= T. polita, Sow.), which 



I have before me, only one exhibits a slight indication of lilac at the tip of the 



umbones. 



Tapes (Paratapes) undulatus, Born. 



Venus iinditlata, Born, Index Mus. Cæs. Vindobon.. 1778, p. 54. — Testacea Musei Cæsarei Vindobon., 



1780, p. 67. 

 Tapes — — Reeve, Conchol. icon., XIV, Tapes, Sp. 8. 



— iTextrix) undulata, Born, Römer, Monogr. d. Moll. Venus, II, p. 20, No. 2, pi. 5, fig. 2. 



— undulatus. Born, Lischke, Japan. Meeres-Conchylien, II, p. 171, III, p. 80. 



— (Paratapes) undulata, Born, Edg Smith, Report on the Lamellibranehiata of tlie Challenger Exped., 



p. 115. 



— undulatus, Born, Fischer, Catalogue d. Moll, de I'lndo Chine, p. 273. 

 Venus rimosa, Philippi, Zeitschr. f. Malakozool., IV, 1847, p. 88, No. 21. 



— — - Abbild, u. Beschreib., Ill, p. 77 (25), pi. 7, fig. 7. 



Tapes — — SowERBY, Thesaurus Concliyl., II, p. (582, No. 11, pi. 146, fig. 29. 



Koh si Chang (^'3). Sound of Koh Chang, 3 — 5 fathoms, soft clay, exceedingly 

 common, a great many specimens. West of Koh Chang, 20 fathoms, mud (2). 

 W. of Koh Kut, 15 fathoms, mud (V2). North of Koh Kong, 8 fathoms, mud (1). 



Long. 6 60 mm. 



Gulf of Siam (Morlet). 



Distribution: — Mergui Archip., Ceylon, Mekran Coast, Persian Gulf. — Philip- 

 pines, China, Japan, Arafura Sea, Port Jackson and Sydney Harbour, Bass Strait. 



Tapes (Protapes) Malabaricus, Ch. 



Venus Malaharica, Chemnitz. Conchyl. Cabin., VI, 1782, p. 323, pi. 31. figs. 324— 25. 

 rapes — — SowERBY, Thesaurus Concliyl., II, p. 682, pi. 145, figs 6—8. 



— — — Reeve, Conchol. icon., XIV, Sp. 27. 



Venus malabarica, — L. Pfeiffer in Martini u. Chemnitz, Conchyl. Cabin., XI Bd., 1 Abth., p. 175, 



pi. 17, figs. 1—2. 

 Tapes Textrix) Malabarica, Chemnitz, Römer, Monogr. d. Molluskengatt. Venus, II, p. 34, pi. 10, fig. 3. 



— Malabaricus, Chemnitz, P. Fischer, Catalogue d. Moll, de I'lndo Chine, p. 234. 



— — — Edg. Smith, Proc. Zool. Soc. London, 1891, p. 424. 

 Venus rhombifera, Hanley, Catalogue of recent bivalve shells, p. 120, pi. 13, fig. 45. 

 Tapes lentiginosa, Reeve, Conchol. icon., XIV, Sp. 25 (fide Edg. Smith). 



Between Koh Mesan and Cape Liant, 5 — 9 fathoms (1). N. of Koh Kam, 5 

 fathoms, gravel (','3). Coast of Lem Ngob ('■-•). Between Koh Kahdat and Koh Kut, 

 6 fathoms, mud mixed with sand (2). W. of Koh Kut, 15 fathoms, mud ('/a). 



