MELVILL— MAEINE MOLLUSCA. 133 



451. Venus (Chione) scabra, Hanley. 



Loc. Saya de Mallia Baoks : Station C 15, 35 fathoms. 

 A form allied to C. subnodtilosa, Hanley, from Australia 



452. Venus {Onij)haloclathrtim) foreuma, Gould. 

 Loc. Cargados Carajos, 30 fathoms. 



Suborder iv. CARDIACEA. 



Family CardiidsB. 



453. Cardium [Trachycardium) leucostoma. Born. 

 Loc. Chagos Archipelago : only dead, disassociated valves. 



454. Cardium (Tr achy cardium) maculosum., Wood. 



Loc. Amirantes : Station E IG, 39 fathoms, with the next species. 



455. Cardium {Trachycardium) mauritianum, Desh. 



Loc. Amirantes : Station E 16, 39 fathoms, among Lithothamnia-viihhle. 



Omitted, curiously enough, from von Martens's Mauritian and Seychelles Catalogue. 



456. Cardium {Trachycardium) serricostatum,, M. & St. 



Cardium (Trachy cardium) serricostatum, Melvill & Standcn, Proc. Linn. Soc. Lond., Zool. vol. xxvii. 

 (1899) p. 191, pi. 11. fig. 20. 



Loc. Seychelles : Station E 6, 44 fathoms, sand. 



One specimen, agreeing with the type, which was dredged off Murray Island, Torres 

 Straits {A. C. Haddon). The deeply excavate interstices and squarely set sen-ated ribs 

 are noticeable. 



457. Cardium {Tr achy c ar dium) transcendens, M. & St. 



Cardium {Trachycardiwii) transcendens, Melvill & Stauden, Proc. Linn. Soc. Loud., Zool. vol. .xxvii. 

 (1899) p. 191, pi. 11. fig. 21. 



Loc. Amirantes : Station E 21, 30 fathoms, among quantities of Halimeda- and 



Lithothamnia-x\xbh\e. 

 A beautiful Trachycardium, amply distinguished by its very fine longitudinal ribs, 

 nearly sixty in number, and bright coloration. 



458. Cardium {Fapyridea) australe, Sowb. (=pulchrtim, Reeve.) 



Loc. Cargados Carajos : Stations B 9, 30 fathoms, broken shell and coral lumps ; 

 B 17, 30 fathoms, shell-rubble. 



