1S76.] (hiring the Expedition into the Dajla Hills, Assam. 313 



Helicarion (Horlites) verrucosus, n. sp., Plate VIII, Fig. 5. 



The shell with animal was placed in spirit, but has been unfortunately 

 lost : it was thin and glassy, with about 4 whorls. I, however, made a 

 careful drawing of the animal at the time it was taken, and described it 

 thus : — 



Animal dull purplish grey ; mantle lobes, which can cover the entire 

 shell, are very minutely mottled, and have a finely papillate surface. On 

 the posterior margin are six blunt and larger wart-like processes, arranged 

 3 on the right and 3 on the left side. Posterior part of the foot well 

 ribbed diagonally, in parallel lines ; there is a distinct marginal line to the 

 edge of the foot. The mucous gland is larger and the upper lobe well 

 pointed. Tentacles moderate. The mantle is divided into three lobes, one 

 of rectangular ovitline is on the anterior left margin. The shell when the 

 animal is in motion is very slightly exposed. 



Total length 1-25", mantle 0-60", mantle to extremity of foot 0-50", 

 tentacles 20". 



Hab. — Under Toruputu. Peak, at 4,600 feet. Found on decaying wood 

 during damp weather. 



Among some very excellent drawings of the late Dr. Ferd. Stoliczka is 

 one of a Helicarion very similar to this in form and in the papillate surface 

 of the mantle, only that the papillae are more generally distributed, and 

 the animal is of a dull brown colour. 



Helicarion minutus, n. sp., Plate VIII, Fig. 1. 



Shell ovate, depressed, rather solid, brown with an olive tinge, and 

 with a glazed polished surface. Whorls 3, very rapidly enlarging. Aper- 

 ture oblique, elongately lunular. 



Major diam. 0'22", minor diam. 0-18". 



Animal pale horny, tentacles and a line from them to the mantle dark 

 coloured, with a dark line down the upper surface of the extremity of the foot, 

 which last is mottled on the side. The mantle just covers the edge of the shell 

 and the right posterior lobe is moderately developed. The portion of the 

 body anterior to the shell is very short in comparison to the posterior part. 



It may be known from H '. salius by its much flatter form. 



The animal of IT. salius from a living specimen taken at Mairang in the 

 Khasi Hills is as follows : — 



Pale yellowish, with a tinge of orange on foot ; tentacles pale, short, 

 a dusky line on upper surface of the posterior portion of foot. Mantle 

 slightly reflected over the edge of the shell. Jumps about actively when 

 handled. Shell (pale green) 0'30". Length of animal 0"6". 



I have a form exactly similar from the west Khasi Hills, but none of 

 the shells are so rich in their coloration. 



