107 



feature ; it may be present on one side only, and may be a distinct filament or a 

 mere papilla. 



6898 



~¥^' 



6930 

 3 



6968 

 3 ■ 



4310 



4 

 5012 



10 

 5438 



^o ■ 



5718 

 10 ■ 



5878 

 10 ■ 



Phricotelphusa f/ageii demonstrates the close connection between the 

 subgenera Phricotelphusa and Liotelphusa, both in the form of the exopodite of 

 the external maxillipeds and in the form of the male abdomen ; its epigastric 

 crests again, though quite distinct, are blunter than in any other species of its 

 subgenus, except the next species, which exhibits the connection between ihe 

 two subgenera even more clearly. 



33. Paratelphusa (Phricotelphusa) campestris, n. sp. (Fig. 27.) 



This species from the Delta of Lower Bengal is very closely related to P. 

 gageii from the hills. It may, in fact, be regarded as a gageii still further on the 

 way towards Liotelphusa. It may be described by comparison with that species 

 {gageii), from which it differs only in the following particulars :■ — 



The colour, in spirit, is greenish-yellowish ; the carapace is not so flat, its 

 depth being half its length ; the front is more distinctly bilobed ; the external 

 orbital angle forms a distinct tooth ; the antero-lateral borders are not defined, 

 and in the unique specimen there is no trace of an epibranchial tooth. 



The epigastric crests are distinguishable, not as distinct elevations, but as 

 oblique, elliptical, eroded patches. The post-orbital crests are low and blunt 

 and faint. 



In the external maxillipeds of the unique specimen neither exopodite has any 

 trace of a flagellum, and the longitudinal groove of the ischium is extremely faint. 



In the unique adult male specimen the carapace is a little over fths inch 

 long and not quite iths inch broad. 

 5533 



10 



Bamagore, near Calcutta. A. Alcock. 1 ^ . 



I describe this species from a single specimen, with a good deal of hesita- 

 tion, and contrary to what I believe to be a sound rule. I do so only because. 



