TPARANEVISANDS. 



435 



to a little beyond middle of abdomen, which is centrally sulcate 

 from base to' anterior margin of sixth segment ; anterior («) and 



Fig. 262. — Erthesina robertsi. 



posterior (6) tibiae dilated, not lobately, but laminately towards 

 apices. 



Length 214 millim. 



Hah. Sikhim (Roberts, Coll. Dist.). 



The peculiar dilatation of the anterior and posterior femora is a 

 character of this species. 



G-enus PARANEVISANUS. 



Type, P. subgenericus, Dist. 



Distribution. Northern India. 



Allied to Nevisanus, Dist. (vol. i, p. 122), but lateral lobes of 

 the head distinctly upwardly recurved ; first joint of antennae not 

 reaching apex of head, second joint much longer than third. 



This might with some propriety be classed as a subgenus, an 

 abstract terra of which I have no sufficiently clear conception. 

 Grenera are merely means to aid classification, a convenient method 

 for detaching a group of species with common structural characters 

 which are superior to those used in specific differentiation. T!ie 

 importance of such characters must be estimated according to the 

 purview of the individual entomologist ; they are or should be 

 used to denote a break in sequence. 



2715. Paranevisanus subgenericus, sp. u. 



Head bronzy - black, rugulosely punctate, lateral margins, 

 maro-ins of eyes and a central longitudinal line stramineous ; 

 pron'otum ochraceous, coarsely blackly punctate, the anterior and 



