48 



GUDE : SPECIES OF PLECTOPYLIS. 



Two immature specimens in my collection are composed of five- 

 and-a-half whorls ; one of these has the immature barriers 

 complete, but the palatal folds are very sliort and the posterior 

 oblique portions of the fourth and fifth folds are almost straight 

 instead of crescent-shaped ; externally a slight trace of previous 

 folds can be discerned ; in the other specimen the last immature 

 folds are similar to those of the first specimen, but the remains 

 of a previous set is in a less advanced stage of disintegration. 

 {Ibid., p. 276). 



Plectopylis clathratuloides, Gude. 



Shell depressed conical, moderately umbilicated, pale 

 corneous, translucent, finely and regularly plicated by raised 

 rib:; above, finely and closely ribbed and a little shining below; 

 whorls 5^, slowly in':reasing, slightly convex, suture impressed, 

 Peripher}' with an acute compressed keel, above which revolve 2 

 raised spiral ridges, the lower provided with a fringe of coarse 

 a be 



FiGURH 3. — ricctopylis cUithratuloidcs, Gude. 



hairs. Aperture subquadrate ; peristome simple, a little 

 thickened. Umbilicus deep and moderately wide. Parietal 

 armature, one strong, vertical, simple plate. Palatal armature 

 in two series ; upper series with one posterior, vertical, conical 

 tooth and one minute anterior denticle ; lower series, with one 

 posterior, vertical tooth and a small anterior denticle ; in 

 addition, one elongated horizontal fold below the umbilical 

 angulation and a small fold above the peripherial angulation. 

 Major diameter, 6 millimetres ; minor diameter, 5.5 millimetres; 

 axis, 3.5 millimetres. — Habitat, Anamullay Hills, India. — Type 

 in Colonel Beddome's collection. {Ibid p. 333). 



