258 MR. NEVILL ON THE LAND MOLLUSKS OF MAURITIUS. [Apr. 23, 



Nanina (Macrochlamys) nitella, Morel. 



The animal is of a saffron-yellow colour, with the tentacles black, 

 the black being continued a short distance beyond their bases ; the 

 sole of the foot is light yellow. 



Mauritius, on the Pouce Mountain. Found on the ground. 



Nanina (Rotula) cernica, H. Ad. 



The animal in this case has the tentacles black, the colour being 

 continued a little beyond their bases ; the foot is whitish, with a 

 band of minute white spots along the sides and on the caudal part, 



Mauritius, Vacoa. Found on the ground. 



Stylodon (Erepta) caldwelli, Bens. 



The tentacles are black, and the upper surface of the foot the 

 same, with a narrow white streak down the middle, and one on each 

 side starting from the lower tentacles ; down the caudal part the 

 streak is comparatively broad. 



Mauritius, on the Pouce Mountain. Found always on the ground. 



BuLiMiNus (Pachnodus) velutinus, Pfr. 



The entire animal is black, with the exception of a row of very 

 peculiar orange-coloured nodules down the middle of the caudal 

 part, which is very pointed. It is very strong and quick in its 

 movements, and unusually tenacious of life. There is a variety with 

 both animal and shell of a cream-colour (very rare), the same no- 

 dules being discernible. 



Seychelles (Mahe, Praslin, and Silhouette). Found under the 

 dead leaves of the cocoa-nut, and sometimes on shrubs. 



Buliminus (Pachnodus) fulvicans, Pfr. 



In this species the tentacles are of a dull purplish colour ; the foot 

 is yellow, stained, especially anteriorly, with a varying brownish 

 purple ; the caudal part, which is unusually long and pointed, has a 

 row of minute brownish spots, not nodules, down the centre. 



Seychelles (Mahe, Praslin, and Silhouette). Found at the base of 

 the tuft of leaves of the cocoa nut tree. 



Buliminus (Pachnodus) nicer, Duf. 



The entire animal is black, excepting the sole of the foot, which 

 is of an ashy-grey colour. 



Seychelles (Mahe and Silhouette). Found on a species of Palm, 

 at a very great height only. 



GiBBUS lyonetianus, Mke. 



The sole of the foot in this species is yellow ; the anterior part of 

 the upper surlace varies from reddish claret to purple, and the pos- 

 terior is yellow, dotted with minute purplish spots ; the tentacles 

 are dull purple. 



Mauritius. 



