bo 
bo 
118 
Koh Lan, 30 fathoms, mud ('/2). 
Long. 19 mm. 
Distribution: — Lacecadive and Maldive Archip., Djibouti (Lamy), Isle of 
Bourbon (Deshayes), Madagascar. — Philippines, Torres Strait, Viti Isls., Funafuti 
(Ellice Isls.), Samoa Isls. ; 
In the specimen from the Gulf of Siam the ribs are not markedly granu- 
lated. Prof. Ep. v. MARTENS, Whom I asked to compare the specimen with DuNKER’s 
original specimen, informed me that it “stimmt ganz gut zu den Original Exem- 
plaren yon A. mollis, Dunk.” 
Arca (Anadara) granosa, L. 
Arca granosa, Linnis, Syst. Nat., ed. X, 1758, p. 694, No. 146. — ed. XII, p. 1142, No. 176. — ed. NIlI,. p. 
3310, No. 18. — Mus. Ludov. Ulr., p. 519, No. 93. 
— _— -— Cugemnitz, Conchyl. Cabin., VII, p. 219, pl. 56, fig. 557. 
— — —_ Reeve, Conchol. icon., Il, Arca, Sp. 15. 
— (Anomalocardia) granosa, Linné, Manrrint u. Ciemnirz, Conchyl. Cabin., VII, 2 Abth., p. 38, pl. 3, 
fig. 7. 
— (Anadara) = Lamarck, Mortetr, Journ. de Conchyl., vol. 37, 1889, p. 162. 
— granosa, Linn, Ep. Lamy, Journ. de Conchyl., vol. 52, 1904, p. 158. — loc. cit., vol. 55, 1907, p. 210. 
— (Anomalocardia) granosa, L., DaurzENBERG & FiscuEr, Journ. de Conchyl., vol. 58, 1905, p. 193. 
Coast of Lem Ngob (1). Coast of Koh Chang (*/2). Isles of the Gulf of Siam 
(L. Moret). 
Long. 27-—47 mm. 5 s 
Distribution: — Malacca, Mergui Archip., Bassein river (Burma), Nicobars, 
Madras, Tranquebar, Gulf of Manaar, Bombay. — Cochin China, Tonkin, China, 
Japan (Nagasaki, Kodzuka), Philippines, Sumatra, Java, Borneo, Celebes, Moluccas 
(Lucipara, Ceram, etc.), Timor, Macassar, Aru Isl., Sorong. 
According to E. v. Martens! this species occurs frequently in brackish water 
at Singapore, on Borneo, Celebes, Sunda Islands and other places. M. v. NeuMAYER 
states? that an “Arca granulosa L. var. minuta” was found among fresh-water shells 
(“und zwar mit Arten der Gattungen Vivipara, Bythinia, Melania und Corbicula”) 
in the deposits of the Yang-tse-kiang delta. This is nearly certainly a form of 
A. granosa which lives here in brackish water under conditions similar to those 
prevailing in the localities’ stated by v. MARTENS. 
Arca (Anadara) oblonga, Phil. 
Arca oblonga, Puitirri, Abbild. u. Beschreib. neuer od. wenig gekannt. Conchyl., IJ, 1851, p. 85 (17), pl. 5, fig. 6. 
(Anomalocardia) oblonga, Puiirri, Marrini u. Coemnirz, Conchyl. Cabin., VIII, 2 Abth., p. 103, 
pl. 27, figs. 7—8. 
— (Anadara) = = P. Fischer, Catal. d. Moll. de Indo Chine, p. 210. 
1 Zoolog. Ergebnisse einer Reise in Niederlind. Ost-Indien hrsg. v. M. Weber, IV, 1897, p. 228. 
2 Wissenschaftl. Ergebnisse d. Reise d. Grafen Béla Széchenyi in Ostasien, 1877—80, II, 1898, p. 641, 
pl. 1, fig. 4. 
’ compare also about its occurrence in the Bassein river, in Journ. of the Asiatic Society of Bengal, 
vol. 36, 1867, p. 70. 
