474 Mr. Cameron on 



distance than they are from the eyes. Clypeus transverse, 

 the sides rounded. Head slightly convex in front. Pro- 

 thorax shorter than the head, rounded in front. Median 

 segment short, gradually rounded to the apex, not furrowed, 

 obscurely aciculated. Abdomen subsessile ; the pygidium 

 elongate, sharply pointed at the apex, longitudinally 

 rugosely striolate. The first transverse cubital nervure 

 slightly curved, oblique ; the second and third straight, 

 converging at the top ; the second cubital cellule at top 

 and bottom twice the length of the third ; both recurrent 

 nervures received towards the apical third of the cellules. 



POMPILUS FENESTRATUS, ^Ulith (PL III. f 24). 

 Eyes arcuate, converging a little at the base. Ocelli 

 in a curve, separated by about the same distance from each 

 other that they are from the eyes. Clypeus short, broad, 

 the sides rounded, the apex very slightly arcuate. Head in 

 front convex ; the occiput transverse. Prothorax as long 

 as the head, the sides not convex. Median segment 

 aciculated ; broadly furrowed down the centre. Abdomen 

 subsessile ; pygidium coarsely rugose, covered with long, 

 stiff black hairs. Radial cellule acute in the middle ; the 

 third cubital cellule narrowed to a point above, the trans- 

 verse cubital nervures almost touching there. The first 

 transverse cubital nervure broadly curved ; the first recurrent 

 nervure is received a little beyond the middle ; the second 

 about the middle. 



POMPILUS DETECTUS, Sp. nov. (PI. HI. f 25). 



Black, the basal two, and the greater part of the third 

 abdominal segment, red ; densely pruinose ; the wings fusco- 

 violaceous. Eyes arcuate above, slightly converging beneath. 

 Eyes in a triangle, separated from each other by about the 

 same distance they are from the eyes. Clypeus short, sub- 

 arcuate at the apex. Occiput transverse. Clypeus and 



