1901.] MOLLUSKS FROM THE PBRSIAK &VJJF. 405 



the Andamanese G. puella Sowb. Under this latter name we have 

 from Mr. Townsend beautiful examples from the Mekran Coast. 



COLUMBELLA (SeMINELLA) ATOMELLA Duclos. 



I. Seems to be the Bombay species, cast up in thousands below 

 Malabar Hill and elsewhere in shell-sand. It differs from the 

 species described below as 0. melitoma in being longer, slightly larger, 

 with straightened whorls ; ribs thick, smooth ; coloration more 

 uniform. 



CoLUMBELLA (Seminella) MELITOMA \ sp. n. (Plate XXIII. 

 fig. 5.) 



C. testa minuta, ovato-obesa, subpelluoicla ; anfractibus sex, quorum 

 tres apiccdes leaves, albo-Iactei, cceteris turritis, ventricosuUs, ad 

 suturas impressis, undique longitudinaliter costatis, costis crassis, 

 rectis, ad ulthnum circa quatuordechn, flavo-pellucidis, nitidis, 

 Icevissimis, siipra juxta suturas, spiraliter albo-toiniatis, scspe 

 infra, medium anfractus ultimi versus basim cancellatis, liris 

 spiralibus delicatis, ad juncturas costarum minutissime gemmu- 

 latis, ad basim fortiter sulculosis ; apertura angusta, labro flavo, 

 Icevi, incrassato, intus denticulato ; columella fiava, simplici, fere 

 recta. 

 Long. 3"25, lat. 1*50 mm.. 

 Hab. Karachi. 



A common species at the above-named locality. It is perfectly 

 distinct from all forms of G. selasphora described in this paper ; 

 and, seemingly, the whorls are more ventricose than in G. atomella 

 Duel., which is the Bombay species, according to our present 

 determinations. It is true G. atomella does not appear to have 

 been perfectly described, and accordingly some element of doubt 

 attaches to it. The present species (C. melitoma) differs in, as just 

 said, its ventricose whorls, thick ribs, smooth, excepting where 

 crossed by slender lirse towards the base of the body-whorl, and 

 golden-yellow colour. The opaque white spiral band just below 

 the sutures is likewise characteristic. 



CoLUMBELLA (Sbminella) phaula^ sp. u. (Plate XXIII. fig. 6.) 

 C. testa minuta, attenuato-fusiformi, tenui, sordide straminea vel 

 fusca ; anfractibus 5, quorum apicales duo scepe nigro-fusci, 

 undique longitudinaliter crassicostatis, costis in ultimo anfractu 

 ad duodecim, interstitiis Icevibus, planatis, ultimo anfractu ad 

 basim sulco-Urato ; apertura angusta, labro Icevi, interdum 

 purpureo-suffuso, intus planato ; columella simplici. 

 Long. 2, lat. 1 mm. 

 Hab. Karachi, 



This very minute species, doubtless nearly allied to G. melitoma 

 and others of this group, is much the smallest of the Karachi 

 species, and the ribs are thicker in proportion to the size of the 

 shell. There is no trace of spiral liration, nor has the lip any 

 denticles on the inner surface. The form is also more attenuate 

 and exiguous. 



^ fieXiTiOjxa, a honey-cake, from the golden colour. 

 ^ ^avXos, insignificant. 



