44 H. F. Blanford— On Camptoceras $c. [No. 1, 



Alt. 38 mm. ; diam. 6.5-7.5 mm. — Aperturae alt. 7, lat. 4 mm. 

 Cepit Dr. F. Stoliczka apud Khersiong Himalayse Sikkimensis, 

 This species appears to have escaped the notice of all previous 

 collectors in Sikkim ; it was found in association with its near ally 

 G. tenuispira, Bens., by Dr. Stoliczka during a recent visit. It is 

 easily distinguished from the latter species by its slenderness, (the 

 diameter being ■§- of the length), and the comparative narrowness of 

 its whorls ; moreover by the form of the columella, the lower part 

 of which is bent abruptly almost at right angles with the slope of 

 the inner lip ; while in G. tenuispira, G. erosa, and other allied 

 forms, the curvature is at the utmost obtuse. Specimens, the shell 

 of which has been slightly weathered, shew fine spiral markings, 

 but these are not visible unless the shell has become somewhat 

 opaque. The animal is dark leaden grey, somewhat paler at the 

 sides of the foot. 



The following is a list of the species now known from Sikkim :— 

 G. tenuispira, Bens., G. crassula, Bens., 67. hastula, Bens., 67. 

 orohia, Bens., 67. erosa, nob., 67. laculina, nob. 

 Helicarion ovatum, nov. sp. PL II. fig. 9. 



Testa depressa, peripheric ovata, solidiuscula, diaphana, fusees- 

 cente cornea, polita, obsolete arcuatim striata. Spira parum con- 

 vexa ; apice vix exserto. Anfractus 3£, rapide accrescentes ; ultimua 

 descendens. Sutura impressa, marginata. Apertura obliqua, de- 

 presse lunata. Peristomatis margo columellaris subverticalis ; 

 basalis leniter arcuatus. 



Diam. major 11.5 mm., minor 9 mm., axis 5 mm. 



Aperturse alt. 5, lat. 7 mm. 



Cepit Dr. F. Stoliczka apud Darjeeling. 



Distinguished from H. salius, Bens. sp. (with which it is asso- 

 ciated,) by its larger size, more depressed form and simple peris- 

 tome, not recurved at the columella. On the other hand, it is 

 smaller, more solid and more globular than E. planospira, Bens. sp. 

 From H. scutella, Bens, sp., and H. Bensoni, Pfr. sp., it differs by 

 its greater solidity, its highly polished surface and the less rapid 

 increase of the last whorl. It is also smaller than the former of 

 these species. 



