392 MESSRS. MELVILL AND STAXDEN ON [Julie 18, 



Acmoptramis ruLTA Gray (Jlonoptygma Lea). 



I. Bombay {Abercrombie) ; Karachi. Amongst dredged shingle; 

 dead specimens only, bat very fine. The four uppermost whorls 

 are uniformly white, contrasting strongly with the darkly-coloured 

 lower ones. 



Arctjsoptramis gatisa Melv. (Myonia A. Ad.). 

 I. Bombay (Abercrombie). 



At'T.EOPYRAMIS GRANULATA A. Ad. 



I. Karachi. 



ACT.EOPTRAMIS PSTCIIE Melv. 



I. Karachi. 



ActjEoptramis speciosa A. Ad. 

 P.G. Linjah Anchorage. 



Mumiola epextroma Melv. 



Rissoina epentroma Melv. Proc. Mai. Soc. Loud. ii. p. 110, pi. 8. 

 fig. 23. 



I. Karachi : mud-covered rocks at low tide. Bombay {Aber- 

 crombie). 



The generic position we have, after much consideration, decided 

 to assign to this very interesting small species, is merely tentative. 

 Mr. Townsend's Karachi individuals are in finer condition than 

 the Bombay types, which were collected in shell-sand, and the 

 apices were therefore fractured. Xow the examination of perfect 

 specimens not only discloses an heterostrophe mamillate proto- 

 conch, but, though the fades be rissoid — a not infrequent circum- 

 stance in this family — and the outer lip thickened, with the 

 columella simple, yet the texture of the shell is much like a 

 Pyrgulina. e. g. edgarii or interstriata ; and we have no doubt a 

 step is now being taken in the right direction, even though the 

 position may very possibly again be changed. 



MUMIOLA SPIRATA A. Ad. 



P.G. Bushire. M.C. Charbar. Grwadur, Ormara. 

 I. Karachi. 



TuRBONILLA ABERCROMBIEI Melv. 



I. Bombay {Abercrombie). 



TURBO>"ILLA BASILICA Melv. 



P.G. Lat. 27° 52', in 40 fathoms, on telegraph-cable. Kishin 

 Island, in 6 fathoms, mud. Bushire. 



TuRBONILLA CANDIDA Folin. 



P.G. Kishm Island. 6 fathoms, soft mud. 

 1. Karachi. Amongst rocks covered at low tide with muddy 

 sand and weeds. 



