109 



Subgenus V. — Liotelphusa. 

 Type : Liotelphusa Isvis, Wood-Mason. 



This subgenus is not sharply defined ; it runs into Pfiricotelphusa, although 

 the extremes i\\ both cases are very distinct. 



No spine on upper border of merus of chelipeds ; antero-lateral borders 

 of carapace not spinoge. 



, Epigastric and post-orbital crests obscure ; lateral epibranchial spine 

 small or minute. .j u. 



The exopodite of the external maxillipeds usually carries a long, strong, 

 jjlumose flagellum. 



The cervical groove is distinctly cut only where it defines the mesogastric 

 area posteriorly. 



All the Indian species are small. They may be tabulated as follows, 

 along with the annectant forms classed with Phricotelphusa : — 



1. Epigastric crests, at least, ver}- inconspicuous; exopodite of 

 external maxillipeds strongly flagellate {Lioteiplmsci) : — 



i. Edge of the front simple ; the length of the sixth abdo- 

 minal segment of the adult male just equals its distal 

 breadth : — 



1 . Inner angle of carpus of chelipeds spiniform : — 



a. Carapace broadish ; post-orbital crests quite 



inconspicuous . . . . .P. lecis. 



/). Carapace squarish ; post-orbital crests fairly 



distinct at their outer extreme . . .P. levin, var. quad rata . 



2. Inner angle of carpus of chelipeds rounded oft" . P. sp. prox. lexis. 

 ii. The free edge of the front is distinct from the antennular 



edge of the front ; the length of the 6th abdominal 

 segment of the male exceeds its maximum breadth . P. austriria. 



II. Epigastric and post-orbital crests distinct ; exopodite of external 



maxillipeds sometimes flagellate, sometimes not . . Phncotelphusa gageii. 



III. Epigastric and post-orbital crests indistinct ; exopodite of external 



maxillipeds non-flagellate ..... Phricotelphusa campestris. 



35. Paratelphusa (Liotelphusa) levis, Wood-Mason. (Fig. 65.) 



Telphusa leris, Wood-Mason, Journ. Asiatic See, Bengal, XL., 1871, pt. II., p. 201, pi. xiv., figs. 1-6. 

 Potamou (Geotelpliusa) levis, Mary J. Rathbun, Nouv. Archiv. du Museum (4), VII., 1905, p. 218 {ulii lit.). 



Carapace rather square-cut, deep, its length about three-fourths its 

 greatest breadth, its depth half its length ; its sui'face is smooth, except for 

 some fine oblique striae near the lateral borders. 



Cervical groove restricted to a crescentic depression dehmiting the 

 mesogastric area posteriori}^, and there not very deep. Hence the several 

 regions of the carapace are more to be imagined than defined. As for 



