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



Var. major, (Fig. 4.) Sutura non marginata; anfractibus 6-7. 

 Long. 6, diam. 4, apert. long. 3J millim. 



Hah. The same as that of the two preceding species. " Most 

 abundant on the oozy mud at half-tide mark^^ (Fairbank, MS.). 



"Animal scarlet; lip rectangular^^ (Leith, I.e.), The animal 

 of this species I examined some years ago. The tentacles are 

 very short and blunt, with the eyes on their summits. 



This form must approach very closely to A. pinguis, Von 

 Martens. It is the most nearly allied of all the Bombay forms 

 to A, ruhellaj from Burma, described below. From its con- 

 gener A, eornea it differs in the absence of perforation, flatter 

 whorls, and greater size of the last whorl as compared with the 

 others. 



The name is unfortunate, as, although the margination was 

 well marked on the small variety (two-tenths of an inch in 

 length) to which the name was first applied, it is always in- 

 distinct and often absolutely wanting in larger specimens. To 

 this Dr. Leith himself called my attention. Should the present 

 name be objected to on this ground, that of A, Leithi might be 

 substituted. 



Assiminea rotunda, Fairbank, MS. (Fig. 5.) 



J. testa imperforata, rimata, conoideo-globosa, solidula, striatula, 

 oleoso-micante, coccinea, anfractibus superioribus seepe albescenti- 

 bus. Spira conoidea, lateribus convexis, apice acute, sutura im- 

 pressa, non marginata. Anfr. 6-6|^, convexi; ultimus multo major, 

 ventricosus, subtus rotundatus. Apertura spiram superans, fere 

 verticalis, supra acute angulata; peristoma rectum, margine ex- 

 terno tenui, columellari subincrassato expanso. 



Operculum simile ei A. cornea. 



Long. 4, diam. 3, apert. long. 2^, lat. 1| millim. 



Hab. Lives partly buried in the mud between tide-marks, 

 rather lower down than A, marginata and A. subconica, in the 

 same localities (Fairbank). 



The animal is grey. Specimens of this species have been 

 distributed in the United States and in England under the 

 above name ; but no description has hitherto been published. 



Assiminea rotunda is a rounder and more ventricose form than 

 any other of the Bombay species. It may also be recognized by 

 the large size of the last whorl, and by its bright scarlet colour. 



Assiminea rubella, n. sp. (Fig. 6.) 



A. testa imperforata, subrimata, ovato-globosa, solida, glabra, oleoso- 

 micante, striatula, rubra vel rubello-fusca, lineis binis impressis 

 infra suturam sculpta, superiore persistente, inferiore juxta aper- 

 turam evanescente. Spira breviter conoidea, apice acute, ssepe 

 erosula, sutura vix impressa. Anfr. 5, parum convexi ; ultimus 

 multo major, ventricosus, non carinatus. Apertura spiram supe- 



