MOLLUaCA OF INDIA. 



21" 



convexiusculo, circa umbilicumprofundissimum, anguste pers}}ectivum, 

 angulato ; apertura obliqua?, transversa, quadrata, peristomate 

 tenui, recto, margine columdlari lato, expansiusculo. 



" Diam. major 5, minor 4i, long. 5^- mill. 



"Habiiat in valle E-ungun [RungnuJ, prope Darjiling, rarissime. 



" This shell is an exaggeration of the bascauda type of the Khasia 

 Hills, with a more remote costulation and lengthened attenuate 

 spire. The aperture of the single dead specimen collected by 

 Mr. W. T. Blanford is not in the best condition." 



Several specimens of this pretty species occur among the shells 

 collected by Mr. W. Robert in the hills east of the Teesta Kiver, 

 also an allied form from Damsang. 



Benson described a species as allied to macropleuris, viz. H. corys. 

 This single dead specimen I find is in the Blanford Collection, which 

 he presented by will to the Natural History Museum. The specimen 

 has suffered much since Benson described it, and it is now only 2 mm. 

 in length ; the aperture and last whorls gone. I give a drawing of 



Fig. !• — -^- corys, Bs. Type. Young shell, x 9. 



2. — Apex of specimen No. 34, Blanford's Collection, named macropleuris 



X 9. 

 3. — Apex of R. macropleuris, Bs., X 9. 

 4.— i?. corys, Bs., Damsang, X 6. 

 5.— Ditto, ditto, X 3. 



this (fig. 1) ; also one of the apex of a true macropleuris and the 

 Damsang specimen — the three enlarged to the same amount. I 

 cannot see any appreciable ditference between the apex of corys 

 (fig. 1) and the third specimen* (fig. 2). The suture is marginate 

 near the apex ; the costulation at remote intervals does not begin 



* >'o. 34 of Blanford's catalogue of sbeUs on glass slips. 



