404 MESSES. MELVILL AND STAJ^DBN ON [June 18, 



CoLUMBELLA (Miteella) nomadica \ sp. n. (Plate XXI. 



fig. 7.) 



C. testa fusiformi, oblong a, 7'ohusta, perlcevi, parum nitida, solida j 

 anfractibus 8-9, quorum apicales tres Iceves, parvi, uni- 

 colores, cmteris albis, nigro-hrunneo arete reticulatis, interstitiis 

 rotundis, infra, juxta suturas hie illic permagnis, conspicuis, 

 anfractu, ultimo versus basim spiraliter sulculoso ; apertura 

 oblonga, labro eoetus crassiusculo, intus denticulato ; columella 

 simplici. 

 Lat. 8, long. 3 mm. 

 Hob. Karachi. 



With a considerable resemblance to C eribraria Lam. of the 

 New World, this species is somewhat larger and coarser in detail ; 

 it is a particularly handsome form, and now that it has been 

 differentiated will be probably considered very distinct. 



CoLTJMBBLLA (Miteblla) zebea Gray ( = miser Sowb.). 



P.G. Linjah. 



M.C. Not infrequent, under stones at low water. 



Mr. Pace w^rites : " A very elate and pale form of the species 

 known usually as G. miser Sowb., agreeing perfectly with the type 

 of C. elata Eeeve ; but the latter is recorded, perhaps erroneously, 

 to come from California." 



COLUMBBLLA (ANAOHIS) EUGULOSA Sowb. 



I. Karachi. 



CoLUMBBLLA (AlSTACHIS) TBEPSICHOEB LeatheS. 



M.C. Often on mud-covered rocks at low tide. 

 I. Bombay {Abercrombie). 



Mr. Pace notes on a specimen of gigantic dimensions (prob. 

 C. miser) from Mekran Coast, that it " in some respects approaches 

 G. terpsichore Leathes." Here we see the frequent futility of 

 subgeneric distinctions ; in the text-books the three nearly allied 

 Columbellae are at present placed in three subgenera, viz. : — 



G. (Atilia) elata Eeeve. 



G. (Mitrella) miser Sowb. 



G. (Anachis) terpsichore Leathes. 



CoLUMBELLA (Atilia) albinodulosa Gask. 

 M.C. Local. 



This was at first referred to G. nivosa Eeeve, the body-whorl 

 being slightly nodulous and the brown maculation more intense. 



CoLUMBELLA (Atilia) combeessa Gask. 

 I. Karachi. An Erythraean species. 



CoLUMBELLA (Atilia) conspbesa Gask. 



P.G., I. No precise localities ; also di-edged off Ceylon {W. A. 

 Tindall). — Mr. S, Pace deems this synonymous with, at all events, 



^ nomadica, from the likeness in marking to the " opvis vofidSiKa," or 

 CJuinea-fowl. 



