MBLVILL— MAKIjME MOLLUSCA. 135 



463. Cardium (Cfenoeardia) fornicatum, Sowb. 



Log. Cargados Carajos : Stations B 9 and B 17, both 30 fathoms, shell-rubble. 

 Seychelles : Station F 5, 44 fathoms, coral-rubble. 



A rare and exquisite form which has lately been dredged in considerable quantity in 

 the Gulf of Oman, otf Maskat (Muscat), by Mr. F. W. Tovvnsend. Originally described 

 from Erythraean waters. 



464. Cardium (Cienocardia) fragum, L. 

 Log. Amirantes : S. Joseph I. 



Chagos Archipelago. 



465. Cardium [Ctenocardia) nivale, Reeve. 

 Log. Coetivy I. 



Extends in range from the Red Sea to the Philippine Isles. 



466. Cardium {Ctenocardia) victor, Angas. 



Cardium victor, Angas, Proc. Zool. Soc. Loud. 1872, p. 612, pi. 42. fig. 9. 



Log. Cargados Carajos : Stations B 9, 30 fathoms, among broken shell and coral ; 

 B 20, 28 fathoms, coral-rubble. 

 Providence I. : Stations D 3, 29 fathoms, coral-rock ; D 4, 50-78 fathoms. 

 A brilliant and magnificent species, also noted from the Maldive and Laccadive Isles 

 [Stanley Oar diner). From D4 {v. stipra) came one large and fine specimen peculiarly 

 oblique in form, which might be characterized as var. pulcherrima. 



467. Semicardium {Lunulicar dia) subretusum, Sowb. 



Log. Amirantes : Station E 11, 25-80 fathoms, on hard rough ground. 



Family Tridaciiidae. 



468. Tridacna elongata. Lam. 

 Log. Chagos Archipelago. 



469. Tridacna gigas, Lam. 

 Log. Chagos Archipelago. 

 Only young shells collected. 



Family Chamidse. 



470. Chama fibula. Reeve. 



Log. Cargados Carajos : Station B 24, 30 fathoms, sand and weed. 



Amirantes : Stations E 1, 29 fathoms, E 13, 20-25 fathoms, rubble. 

 Seychelles: Station F9, 37 fathoms, hard sand. 

 Chagos Archipelago. 



