161 257LjlLIBRAi»1 



\^\ ^.^ 



Long. 8 — 35 mm. 



Pavie in 1884 took it at the islands in the Gulf of Siam (Morlet, Journ. de 

 Conchyl., vol. 37, p. 168). 



Distrihut ion : — "Bangkok" (Dautzenberg), ' Bay of Bengal, Ceylon, Arabian 

 Sea, Persian Gulf, Gulf of Aden, Red Sea, Suez Canal, Madagascar and Rodriguez, 

 Mozambique and Zanzibar, Natal (Sowerby), Malay Archip. (the most commonly 

 occurring species, v. Martens), Philippines, north and east coasts of Australia. 



Card. Diipuchense, Reeve, is recorded to have been taken at the "Island of Dupuch, 

 Torres Straits (found on the reefs at low water); Dring, H. M. S. Beagle." Melvill 

 & Standen" do not record it from Torres Strait, but C. rugosum, Lam. is recorded 

 from "Boydong Cays." Ed. Römer ' regards, and undoubtedly correctly, C. Dupiichense, 

 Reeve, as a variety of C. flavum. 



Cardium (Trachycardium) impolitum, Sow. 



Cardium impolitum, G. B. Sowerby, Proc. Zool. Soc. London, 1840, p. 107. 



— — — Conchol. Illustr., Sp. 49, figs. 6 and 66. 



— — — Reeve, Conchol. icon., II, Cardium, Sp. 80. 



— — — Martini u. Chemnitz, Conchj'l. Cabin.. X, 'i Abth., p. 62, pi. XI, fig. 12. 



Koh Chuen, 30 fathoms (1). Between Koh Kut and Koh Kahdat, 10 fathoms, 

 shells {'I2). Between Koh Mesan and Cape Liant, 5 — 9 fathoms (^/a). 



Long. 10 mm., alt. 12 mm. (long. 27 mm., alt. 33 mm.). 



Distribution:— Karachi (Melvii.l & Standen). — China (Sowerby), Tahiti 

 (Frauenfeld). 



Cardium (Trachycardium) arenicolà, Reeve. 



Cardium arenicolum, Reeve, Conchol. icon., II, 1843, Cardium, Sp. 78. 



— arenicola, — Lischke, Japanische Meeres Conchyl., II, p. 125. 



— maculosum, Sowerby, Conchol. Illustr., Sp. 48, fig. 63 (non Wood). 



Koh Kram 20—30 fathoms (2 + '12). Around Koh Mesan and Koh Chuen, 

 5 — 38 fathoms, stones and shells (8). Koh Kahdat, 1 — 2 fathoms ('2). 



Long. 3 mm., alt. 35 mm. (long. 32 mm., alt. 38 mm.). 



Distribution: — Red Sea (Sturany). — Philippines (Cuming), Nagasaki 

 (Lischke). 



The specimens from the Gulf of Siam have about 52 — 55 ribs, and as Reeve 

 for his species states only 46 ribs, I thought, at first, that the specimens were per- 

 haps Card, transcendens, Melvill & Standen, ' in which species there are 58 ribs. But 

 J. Cosmo Melvill, to whom I sent a few specimens, kindly tells me that the}' 



' According to a written communication from Ph. Dautzenberg these specimens must most 

 properly be referred to C. Dupuchense = pectiniforme , Born. The locality "Bangkok" is certainly 

 due to a mistake. 



- Journ. Linnean Soc. Zool., vol. XXVII, p. 191. 



^ Martini u. Chemnitz, Conchyl. Cabin., Cardiacea, p. 58. 



* Journal of the Linnean Soc, Zoology, vol. 27, 1899, p. 199, pi. 11, fig. 21. 



D. K. D. Vidensk. Sclsk. Skr , 7. Hække, naturvidensk. ou math Afd V. 3. 33 



