1909] A. Ai^cocK : New Freshwater Crabs. 377 



male — the greatest breadth of this segment is barely two-thirds of 

 its length. 



From Coorg and from Ootacamund : 6 males, 2 females. 



Paratelphusa {Barytelphusa) pollica-^is, sp. nov. 



Although this species comes from South India its closest relative 

 is the Eastern Himalayan P. luguhris (Wood-Mason). As in the 

 type of that species the carapace is fiattish and about half of its an- 

 terolateral borders lie in front of the lateral epibranchial spine. 



The cervical groove is very deep and broad, and runs wide, to a 

 point behind the much-retreated lateral epibranchial denticle. 



The epigastric and post-orbital crests form one strong, nearly 

 straight ridge, which runs, on either side, from the mesogastric 

 furrow obliquely into the lateral epibranchial denticle. 



The fingers are peculiarly broad, particularly the fixed finger. 



From South India, probably Travancore : 3 males and 3 females, 

 adult, and 6 non-adults of small size. 



Subgenus Phricotelphusa (Type: Telphusa callianira, de Man). 

 Paratelphusa {Phricotelphusa) campestris , sp. nov. 



Singular to tell, this species, from Barnagore near Calcutta, is 

 so closely related to P. gageji from an elevation of about 5,000 

 feet in the Eastern Himalayas that, having only a single (male) 

 individual to examine, I almost hesitate to separate it. 



It resembles a P. gageii that has been holy-stoned, the epigas- 

 tric crests being, not distinct elevations, but mere eroded patches ; 

 the post-orbital crests being low, blunt, and faint ; and the lateral 

 epibranchial tooth being entirely absent. 



The carapace is more convex, and the antero-lateral borders are 

 blunt and ill defined. The colour is greenish yellow. In the single 

 specimen — an adult male with a carapace fths of an inch long and 

 fths broad — the exopodite of the external maxillipeds has no trace 

 of a flagellum. 



Subgenus Liotelphusa (Type : Telphusa levis, Wood-Mason). 

 Paratelphusa {Liotelphusa) levis (Wood-Mason) var. quadrata. 



Wood-Mason did not separate this variety, but to me it seems 

 worthy of recognition. 



The carapace is almost square, and its length is seven-eighths 

 its greatest breadth. The ' ' cervical groove ' ' is hard to make out 

 in any part of its course. The outer orbital angle and the lateral 

 epibranchial tooth are more prominent than in the t>T3e of P. levis. 

 The antero-lateral borders of the carapace, under a lens, are sub- 

 cristiform. The epigastric crests, such as they are, are not so 

 plainly continuous with the post-orbital crests, and the latter are 

 almost sharp in their outer half. 



From the Naga and Khasi Hills and from Assam : 19 males, 

 25 females. 



