540 On new Genera and Species of Hymenoptera. 



Head densely covered with a grey pile, the front and vertex 

 more sparsely with longish blackish hair. Eyes parallel, 

 slightly converging on the top ; the ocelli are in a curve, and 

 the hinder are separated from each other by a greater distance 

 than fhey are from tlie eyes. Apex of clypeus broadly 

 rounded. Mandibles br ladly rufous in the middle, their base 

 thickly coveied with depressed jMibescence. Pronotiim in the 

 middle not quite so long as the head ; its apex is broadly 

 rounded. The median segment has a gradually rounded 

 slope ; looked at from above the apex is transverse ; the sides 

 at the apex bituberculate, the upper tubercle being larger 

 and more rounded, the lower smaller, more distinctly defined, 

 more projecting, and more triangular in form. Wings fusco- 

 violaceous ; the radial and secotid and third cubital cellules 

 are lighter in tint, but not hyaline ; the second cubital cellule 

 is about three times longer than the third ; the first and 

 second transverse cubital nervures are parallel, the first has a 

 more rounded slope, the third is obliquely bent near the top ; 

 the first recurrent nervure has an oblique slope and is re- 

 ceived near the transverse cubital nervure as in Salius, the 

 second at the apex of the basal fourth of tlie cellule; the anal 

 nervure in the hind wings is interstitial. Legs densely 

 pruinose ; the tibial and tarsal spines are long and stout ; 

 the underside of the tarsi is covered densely with short 

 spines; the claws have one long, curved, and a short, thick, 

 bluntly pointed tooth. Abdomen black ; the apical halves of 

 the segments with lighter-coloured bands of a dark bluish 

 tinge. 



Conies near to P. parenthope, Cam. : that is a larger and 

 stouter insect, it has the second cubital cellule longer com- 

 pared with the third, the second recurrent nervure is received 

 in the middle of the cellule, and the wings are more uniformly 

 coloured and have a deeper more violaceous tint ; the head is 

 much more largely developed behind the eyes, it being there 

 nearly as long as the width of the eyes, while in the present 

 .species they are not half the length, it being also there more 

 oblique, less rounded. 



P. simUlimus appears to be a close ally of this species. 

 Smith's description is not detailed enough for satisfactory 

 determination ; Bingham (Hymen, of India, p. 166) says that 

 the second and third cubital cellules are equal in length, but 

 this statement is contradicted in the synoptical table on p. 150, 

 where the second it said to be wider than the third. 



Pompilus implacabilts, sp. n. 



Xiger, dense argenteo-pruinosua ; alls brevis, flavis,apice fumatis. $ . 

 Long. 10-11 riiin. 



Hal/. Bengal {Rothney). 



