382 Mr. W. T. Blanford on some Indian and 



" The animal has a broad short foot, a head expanded into a 

 broad and sUghtly emarginated lip, used as a fore foot, only two 

 tentacules, which are short, nearly cylindrical, contractile, and 

 bearing the eyes on their summits. The respiratory opening is 

 a round perforation in the mantle, behind the right tentacule. 



'^ Operculum is horny, with subspiral lines running from a 

 nucleus near the columella. 



"Shell subumbilicated, with an elevated spire; aperture 

 rounded below and at the summit angular; peristome edged, at 

 base effuse ; lips united by callus, which encroaches on or even 

 covers the umbilicus/' 



The above description is amply sufficient to prove the identity 

 of the genus with Assiminea. I have had the advantage of ex- 

 amining the animal of one species, which corresponds precisely 

 with Dr. Leith's account and also with the animals of other 

 forms of Assiminea which I have examined elsewhere. 



The specific descriptions of the three forms named by Dr. 

 Leith, although ample for the purpose of discriminating them, 

 are scarcely sufficient, in some respects, to distinguish them 

 from other forms of Assiminea ; and I therefore give more de- 

 tailed descriptions below. 



Subsequently the Rev. S. Fairbank found a fourth species, 

 which he distributed under the MS. name of O. rotundum. Of 

 this no description has ever been published. 



This note would have been sent sooner, but that I was in 

 hopes of receiving authentic specimens of the various Bombay 

 species. In this I have succeeded : both Dr. Leith and Mr. Fair- 

 bank have, most obligingly, not only compared my specimens 

 of the shells with their types, but have also most liberally sup- 

 plied me with typical specimens as well as with notes on the 

 habitat of the several raollusks. 



Assiminea cornea, Leith, sp. (Fig. L) 



A. testa subobtecte perforata (interdum im perforata), conoideo-ovata, 

 cornea, glabra, oleoso-nitente, vix striatula. Spira conoidea, late- 

 ribus convexis, apice acuto, sutura impressa, non marginata. 

 Anfr. 6, convexi, sensim accrescentes ; ultimus subtus rotundatus, 

 haud carinatus. Apertura spiram vix aequaiis, subovalis, obliqua, 

 supra aperte angulata ; peristoma rectum, margine externo tenui, 

 columellari incrassato expansulo, umbilicum partim v. omnino 

 tegente. 



Operculum corneum, paucispirale, nucleo subbasali, interno. 



Long. 4, diam. 3, apert. long, vix 2 millim. 



Hab. Bombay Island, on the mud-flats of the harbour shore, 



near high-water mark. " On tufts of grass at high- water mark" 



(Fairbank, MS.). 



"Animal grey; lip subcrescentic ^' (Leith, /. c). 



