SPECIES OF PLECTOPYLIS RECENTLY DE- 

 SCRIBED IN SCIENCE GOSSIP BY G. K. 

 GUDE. 



Plectopylis smithiana, Gude. 



Shell dextral, discoid, widely umbilicated, rufous brown, 

 coarsely and regularly ribbed, with scarcely visible microscopic 

 sculpture above, but strongly decussated with spiral lines below, 

 suture impressed. Whorls 6, convex, slowly increasing, the last 

 rapidly widening towards the aperture, not angulated above, 

 shortly descending in front. Aperture sub-triangular ; peristome 

 light brown, a little thickened and reflexed, the margins con- 

 verging ; parietal callus with a strongly raised flexuous ridge, 

 separated from both margins of the peristome. Umbilicus very 



Figure i. — Plectopylis smithiana, Gude. 



wide but shallow. Parietal wall, with an entering flexuous 

 horizontal fold, united to the ridge at the aperture, and at 

 one-third of the circumference from the aperture with one 

 crescent-shaped vertical plate, which has two small denticles, 

 one above and one below, on the anterior side. Palatal folds 6, 

 the first and sixth thin and horizontal, the other four short, 

 broad and oblique. — Major diameter, 27 millimetres ; minor 

 diameter, 21 millimetres ; axis, 10 millimetres. — Habitat, 

 Attaram, Burma. — Type in the British Museum. 



