1S76.] (luring the Expedition into the Dctfla Sills, Assam. 315 



Major diameter O50", minor diam. - 25". 



Animal not seen. 



Two dead shells were found in a damp low piece of forest near the 

 Dikrang river close under the village of Pachitah, or Camp 7. 



The shell is a peculiar form, the body whorl spreading out and over- 

 lapping in front, giving the shell a limpet-like shape. Without a know- 

 ledge of the animal it is very difficult to say in what genus it should be placed, 

 but it is probably a Helicarion form. The shell, however, so much resem- 

 bles Testacella that I have placed it temporarily in that group. 



Philomtcus (Incixlakia) cahpestkis, n. sp., Plate VIII, Fig. 3. 



No shell. 



Animal pale ochre, with a longitudinal dark stripe on the side of body. 

 Tentacles very short, only 0-13". Total length 1-65". 



Hab. — Found on the damp grass early in morning at Kholabari in the 

 Darrang District, — only one specimen seen. 



I must here allude to a similar form of slug which I have recorded in 

 my note-book as Philomycus monticolus, and which I sketched at the time it 

 was taken in the hills bordering the Kopili river, North Cachar Hills. Animal 

 white, tinged with pale lilac, having intensely black spots scattered over 

 body, with one longitudinal band of same colour along the side, and one 

 central down middle of back ; foot white below ; tentacles very short, 

 brown, the two lower ones wide apart and very short indeed. Extremity 

 of foot pointed. Total length one inch. 



Opeas Nevtlli, n. sp., Plate VIII, Fig. 12. 



Shell turreted, very elongate, pale, silky with a green tinge, older speci- 

 mens of a pale straw-colour, covered with a thin epidermis, beautifully striate 

 under lens. Whorls 11 — 12, moderately rounded and very gradually 

 diminishing in size to the apes, which is blunt ; suture impressed ; aperture 

 angular above, outer lip thin. 



Alt. - 55", major diam. OlO". Largest specimens, O90". 



Hab. This" very delicate elongate shell was common on Toruputu 

 Peak, but far finer specimens, equal in size to the figure, were obtained 

 on the banks of the Pichola Nulla out in the plains. I am not satisfied 

 with this figure ; the whorls being rather too flat and the apes too sharp. 



I have named this shell after my friend Mr. Gr. Nevill, with whom I 

 have now so long been associated in the study and collection of Indian land- 

 shells. 



Achat ina (Glessula) hebes. 



Glessula crassilaoris, Bs. Shengorh and Toruputu. 

 Glessula illustris, Gr. -Austen. Toruputu Peak. Found at the same 

 altitude as the original typical form from the Niiga Hills. In forest. 



