1872.] MAJOR GODWIN-AUSTEN ON NEW INDIAN SHELLS. 515 



Proportion of mouth to body-whorl, 7 to 11|. 



I name this shell after that zealous conchologist Mr. Sylvanus 

 Hanley, who was the first to notice the distinctness of this species 

 when looking over my collection of Melauiadse from the Khasia 

 ranges. Several specimens were found. 



3. Hydrocena milium, Bs. (Plate XXX. fig. 3.) 



I have had an opportunity of examining the type specimen of 

 this shell in the collection formed by the late Mr. Benson, and of 

 making a drawing of it, which I now give. The impression formed 

 on seeing it was one of doubt as to its being an Hydrocena, it had so 

 much the appearance of an immature Pupa plicidens, Bs. The 

 examination of a large number (several dozen) in different stages of 

 growth, rather confirmed the impression first formed. In the young 

 of P. plicidens, even before the teeth are formed, the peristome is 

 continuous, as it is in //. milium ; the whorls agree in number ; 

 and the striation is similar. The size of Benson's H. milium, how- 

 ever, is extremely small when compared with P. plicidens taken 

 from the limestone rocks. This last shell, from Mussoorie, is of 

 smaller size ; and the species under review may be only a dwarf 

 variety taken upon the sandstone rocks near Mausmai, in Khasi 

 Hills. Its right to rank as a new genus should be considered 

 questionable until other specimens shall be found, and the animal 

 and operculum examined and fully described. The specimen de- 

 scribed as a new genus is, moreover, old and much worn. For days 

 during the height of the rains I had a collector employed round 

 about Mausmai and Cherra Poonjee, and have searched for it myself ; 

 but I never succeeded in finding this Hydrocena, which of course I 

 only then knew from description. Hydrocena, or rather Acicula 

 tersa is locally very abundant and was soon rediscovered. 



4. Ennea blanfordiana, sp. nov. (Plate XXX. fig. 4.) 



Shell cylindrioid, pale corneous, solid, last whorls polished and 

 glassy, apex white ; spire elongate, sides flat, slightly tapering 

 towards the base, markedly swollen towards the apex, which is 

 rounded and blunt, suture shallow ; whorls 8, the last four smooth 

 with very minute striation, the upper sculptured with close, fine, 

 subverticai ribbing, the body- whorl contracted at base ; aperture 

 oval, vertical, peristome thickened, expanded, deeply sinuated on the 

 upper outer margin, thickened upon the contraction of the body- 

 whorl into a bidentate form ; parietal callus thick and ascending. 



Small variety. 

 inch. inch. 



Length 0-32 0*23 



Diam 0-11 010 



Apert. alt. with peristome . . 0*08 0"06"5 



Hub. Mtihadeo Peak, near AsaM, North Cachar hills, among rocks 

 at 5/00 feet. The smaller variety on Hemeo Pe'ak in the same dis- 

 trict and at the same elevation. 



