374 MESSES. MELVILL AND STANDEN ON [June 18, 



Cerithium mores Lam. 



I. Karachi. Bombay Harbour (Lt.-Coh H. D. Olivier). 

 Yar. patiens Bayle ( = C. rugosum Wood, praeoccA With 

 the type. A variety of this occurs as follows : — 

 P.G. Gulf of Oman, near Jask, at low tide. 



Cerithium rebus Martyn. 

 I. Bombay (Abercrombie). 



Cerithium scabeidum Reeve. 

 Cerithium columna Sowb., var. 

 P.G. On the telegraph-cable, not common. 



Cerithium torresi Sm. 



I. Karachi. 



Seemingly identical with a X. Australian form. 



Cerithium tebburti Sm. 



I. Karachi. 5 fathoms, among mud and stones. 



Cerithium (Colina) pingee A. Ad. : 



M.C. Charbar, and generally along the coast to Jask. 

 I. Karachi. 



At 5 to 7 fathoms, muddy sand and on rocky bottom, the 

 var. tceniatum Sowb. occurring occasionally with the type. 



Described originally from South Africa, a great extension of 

 range is now presented by this species. 



Cerithium (Colina) macrostoma Hinds. 



I. Karachi. 1 to 5 fathoms, on shingle. 



There are one or two doubtful Colina> in the collection, but in 

 view of the variability of the species it is best not to attempt to 

 differentiate them at present. 



Cebithium (Yertagus) attenuatum Phil. 



M.C. On telegraph-cable, rare. 



This is the C. longicaudatum Ad. & Eve. 



Cerithium (Yertagus) fasctatum Brug. 



Yar. martinianum Pfr. 

 P.G. Gulf of Oman, Maskat. Dredged in 10 to 15 fathoms, 

 muddy sand. 



Cerithium (Yertages) kochi Phil. 



M.C. Charbar Bay. 3 to 7 fathoms, amongst stones in sandy 

 mud bottom. 



Extends to E. Africa. 



Cerithium (Yertagus) obeliscus Brug. 

 1. Karachi. On rocks at low tide. 



