TJie Marine Mollusca of Bombay. 33 



Fam. Strombid^. 



StrombUS (Linn). 

 S. gibberulus (Linn.). 



Pterocera (Lam.). 

 P. lainbis (Linn.). 



ROSTELLARIA (Lam.). 

 R. curta (Sovvb.). 



The Rostellaria is fairly common, but never found alive, 

 generally with a crab in possession, though a heavy tapering 

 shell. 



Fam. CERITHIIDyE. 



Cerithium (Adanson). 



C. morns (Lam.). 



C. rnbiis (Mertyn). 



Moms is very common on half-tide rocks, and very 

 variable in shape. 



Cerithidea Bombayana {Sovjh.),Layardi {A. Ad.), and also 



RJiizoporarum (A. Ad.) are all mentioned as from Bombay, 



but out of a great number of specimens of the family we 



have not been able to satisfactorily trace any but the two 



above named. 



Triforis (Desh.). 



T. perversa (Linn.). 



T.sp. 



Perversa is a Mediterranean species, but our specimens 



appear to differ little from it. 



Cerithiopsis (F. Han.) 

 C. {Sella, A. Ad.) Bandorensis (Melvill) sp. nov. 



Fam. Planaxid^. 



Planaxis (Lam.). 

 P. sulcatns (Born). 

 P. similis (Smith). 



Sulcatus very common upon rocks which are only in 

 reach of full tide. 

 C 



