Mr. W. H. Benson on new Helicidse. 265 



rude tuberculatis, plagis duabus basalibus lateralibus fasciaque 

 postica albis, femoribus posterioribus apice albidis. Long. 3-3f lin. 



Desmidophorus strenuus. Niger, crassus, rostro crasso brevi 

 rude punctato, thorace scabro, elytris faseiculatis scabro-striatis 

 valde eonvexis, pedibus testaceo-pubescentibus. Long. 5 lin. 



Desmidophorus inexpertus. Ferrugineus, brevis, subovatus, 

 rostro nigro brevi crasso multicarinato, thorace subtuberculato, 

 elytris tuberculato-striatis fascia tenui albida. Long. 2f lin. 

 [To be continued.] 



XXVin. — Descriptiom of new Helicidse contained in the Darjiling 

 Collections of Messrs. W. T. and H. F. Blanford. By W. H. 

 Benson, Esq. 



1. Helix macropleuris, nobis, n. s. 



Testa subaperte umbilicata, attenuato-pyramidata, oblique minute 

 arcuato- striata, superne costis remotis elevatis arcuatis munita, 

 decorticata albida, nitidula ; spira pyramidali, superne attenuata, 

 apice papillari, papilla Iseviori, sutura carinato-marginata ; anfrac- 

 tibus 8 convexiusculis, ultimo non descendente, filoso-carinato, 

 subtus planulato, versus aperturam convexiusculo, circa umbilicum 

 profundissimum, anguste perspectivum, angulato ; apertura obli- 

 qua?, transversa, quadrata, peristomate tenui, recto, margine 

 columellari lato, expansiusculo. 

 Diam. major 5, minor 4|, long. 5^ mill. 

 Habitat in valle Rungun, 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 col- 

 lected by Mr. W. T. Blanford is not in the best condition. 



2. Helix Corys, nobis, n. s. 



Testa perforata, elongato-pyramidali, oblique confertim minutissime 

 costulato-striata, albida, non nitente ; spira anguste pyramidali, 

 apice obtusiusculo, sutura impressa ; anfractibus 5i convexiuscu- 

 lis, ultimo ad peripheriam filoso-carinato, basi planiuscula ; aper- 

 tura obliqua?, quadrata, longitudine latitudinem sequante, peri- 

 stomate tenui, recto, margine columellari verticali, longe vix ex- 

 pansiusculo. 

 Diam. 2, long. 3 mill. 

 Habitat in valle Rungun, prope Darjiling, rarissime occurrens. 



A single dead specimen occurred to Mr. W. T. Blanford. 

 This minute shell is of a type allied to the last-described species 

 in form, but is very differently sculptured. Its more pointed, 

 not papillate apex, and the absence of costulation at somewhat 

 remote intervals, and of a marginate suture, through so many 

 whorls, prove that it is not the young of maa^opleuris. 



