6 H. H. Godwin- Austen — Descriptions of New [No. 1, 



front another line curves round to the left anterior side (fig. 3b). Mucous 

 gland as in H. gigas. Length ahout 3 inches. 



Shell ovate, exceedingly thin and brittle (fig. 3). 



Major diam. 0'90, minor 055 in. 



Pabmabion ? BUBBUM, n. sp., Plate II, Fig. 4. 



Animal of a fine orange pink, grey on under side of the foot ; tenta- 

 cles short, mantle entirely covering the shell, with only a slight trace of a 

 longitudinal opening running back from the anterior left side, three paral- 

 lel bands of greenish grey along the back of the neck, the eye-tentacles 

 being of the same colour. The gland at extremity of foot with a long, over- 

 hanging lobe. 



Extremity of foot to posterior end of mantle, 0.9 inch. 



Mantle, 0*8 



Anterior side mantle to head, 0*4 



Total length when moving, 1*8 



Shell quite rudimentary, minute, granular (fig. 4S). 

 Major diam. 0"14 in. 



Sab. — Kohima, Naga Hills, in brushwood. 



The mucous gland in this species differs considerably from that of 

 Helicarion gigas and its allies, the upper lobe projecting and hanging over 

 so as to present, when viewed sideways, a narrow horizontal slit. 



Helicabion solidum, Godwin-Austen, Plate II, Fig. 5. 



When this species was first brought to notice by me in the P. Z. S., 

 1872, Plate XXX, the animal had never been observed. It has the form 

 of SMUongense, &c, and a specimen from Kohima was dark umber, pinker 

 below, with no mottling on the body ; tentacles dark. 



In another specimen from the Dunsiri valley, Assam, the animal was 

 pinkish grey with dark mottling, the mantle covered the whole shell and had a 

 slight indentation on the extreme anterior margin ; the mucous gland with 

 small lobe above, the extremity of foot cut off rather square. 



Total length 2*70, mantle 1*3, mantle to head 05 in. 



Shell — major diam. 0'44 in. (fig. 5). 



The specimen from this locality may be young, but the shell is so 

 similar in form to S. solidum, first observed on the peak of Hengdan, Muni- 

 pur frontier, that I have not separated it. 



Helicabion gigas, Benson, small var. 



I found that typical gigas, originally described from Teria Ghat at 

 base of the Khasi Hills, was replaced on the Burrail Range, by the 

 form a drawing of which, together with one of S. gigas, I give on Plate III. 



Desc. — Animal dark ochre brown with very dark mottlings, particularly 

 distinct upon the margin of the foot. 



