191 287 



On account of the small size of the specimens the determination is somewhat 

 uncertain. The "palettes" bear a great resemblance to the figures by Whight (loc. cit.). 



Note. At Singapore in shallow water a solitary valve of a Nattsitora has been 

 taken (by Sv. Gad), probably N. edax, Hedley (Proc. Linn. Soc. New South Wales, IX, 

 1894, p. 501, pi. 32, figs. 1—5), but as its palettes were not found, the determination 

 is uncertain. 



Fam. Pandoridae. 



Coelodon elongatus, Carp. 



Coelodon elongatus, Carpenter, Proc. Zool. Soc. London, 1864, p. 600, No. 3. 



— — — Edg. Smith, Rep. Lamcllibranchiata of the "Challenger" E.xped., p. 62. 



Pandora elongata, — G. B. Sowerby in Reeve, Conchol. icon., vol. 19, 1874, Pandora, Sp. 4. 



Sound of Koh Chang, 5 fathoms, soft clay (1 + ^h). 



Long. 11 — 16 mm. 



Distribution: — China, Borneo, Flinders Passage (North Australia). 



The present species is very characteristic on account of its flatness, but like 

 all the species belonging to the genus Pandora it varies considerably in form. 

 Hedley evidently does not know Sowerbv's figure in Reeve's Conchol. icon, as he 

 calls it (Proc. Linn. Soc. New South Wales, vol. 31, 1906, p. 473) an "unfigured 

 species" and (loc. cit. pi. 37, fig. 16) gives a figure of a form from Mast Head Reef, 

 Queensland, under the name of C. elongatus, Carp., which, however, scarcely is 

 Carpenter's species. 



Note. Myodora trigona, Reeve, has been taken (by Sv. Gad) at Singapore in 

 shallow water. 



Fam. Anatinidae. 



Anatina anatina L. 



Solen anatinus, Linné, Syst. Nat, ed. X, 1758, p. 673, No. 30. — ed. Xll, 1766, p. 1115, No. 40. - ed. XIU, 

 p. 3225, No. 8. — Museum Ludov. Ulrica; reg., 1764, p. 475, No. 18. 

 — — — CHEMNrrz, Conchyl. Cabin., VI, 1782, p. 62, pL 6, figs. 46-48. 



Anatina subrostrata, Lamarck, Hist. nat. d. anim. s. vert., V, 1818, p. 463. — éd. 2, 1835, VI, p. 78. 



— — — Reeve, Conchol. icon., XIV, Anatina, Sp. 0. 



— ■ — — Savigny, Descript. de I'Egj'pte. Mollusques, pi. 7, fig. 8. 



— siplionata. Reeve, Conchol. icon., XIV, Anatina, Sp. 2. 



— — — Edg. Smtfh, Lamellibranchiata of the "Challenger" Exped., p. 76. 



— flexuosa. Reeve, loc. cit., Sp. 5. 

 amphora, Reeve, loc. cit., Sp. 23. 



— eximia. Reeve, loc. cit., Sp. 30. 



N. of Koh Kam, 5 fathoms, gravel (1). Koh Chuen, 30 fathoms (2). Between 

 Koh Mesan and Cape Liant, 9 fathoms (2). S. of Koh Tulu, 10 fathoms, mud 

 mixed with sand (1). Off Tung Kaben, 6 fathoms, mud mixed with sand (2). Sound 

 of Koh Chang, 3 — 5 fathoms, soft clay (many fragments). Between Koh Kahdat 



