MACEOOHLAMYS. PARYATELLA. 145 



F. Species from Andaman and other Islands in Bay of 



Bengal. 



a. Depressed , choinix. 



pseudochoinix. 

 exul. 

 stephus. 

 woodmasoni. 



b. Depressedly conoid, more or less lenticular .... aulopis. 



pseudaulopis. 

 fordiana. 

 perinconspicua. 

 battimalvensis. 



G. Species from Indian Peninsula and Ceylon, 

 a. Subglobosely depressed or subturbinate. 



a'. Longitudinal sculpture present (microscopical), tenuicula. 



b'. No longitudinal sculpture fragilis. 



lixa. 



pedina. 

 infausta. 



b. Depressed or conoidly depressed. 



a'. Diameter not exceeding about 15 mm umbrina. 



nepas. 



woodiana. 



rutila. 



vallicola. 



todarum. 



perrotteti. 



prava. 



vilipensa. 



c. Upper surface transversely plicate or ribbed .... peringundensis. 



d. Shells not exceeding about 6 mm. ( inch) in 



diameter. 

 a. Depressed or conoidly depressed. 



b. Smooth perfucata. 



tratanensis. 

 b'. Longitudinally striated kandiensis. 



neherensis. 



atomaj] 



G^enus PAEVATELLA, nov. 



Type, P.flemingi, Pfr. 



Range. Western Himalayas of Kashmir. 



Shell imperf orate and with few whorls, rapidly increasing, as in 

 Vitrina. Mouth very oblique and large. Usually a thick oliva- 

 ceous epidermis. 



Animal with elongate tongue-shaped shell-lobes, broader than 

 in Macrochlamys, and a pointed lobe above the large mucous pore 

 at the posterior termination of the foot. The male organ has a 

 peculiar disk-like coil, as in Oxytes orobia and in typical forms of 

 Macrochlamys, to which the retractor muscle is attached. 



This genus has the animal of Macrochlamys, with a Vitrina-like 

 shell. 



L 



