196 HYMENOPTEKA. 



^ 28. PompiluS imperialis. (Tab. XI. figg. 16, head; 16 a, wing.) 

 Pornpilus imperialis, Smithy Descr. of New Species of Hymen, p. 155 (1879) \ 



Eab. Mexico, Xucumanatlan in Guerrero 7000 feet (H. H. Smith) ; Costa Rica, 

 Cache 1 (Bogers). 



In this species the clypeus is broadly rounded ; the eyes converge slightly at the top ; 

 and the ocelli are in a triangle, the hinder ones separated from each other by a slightly 

 less distance than they are from the eyes. Head broader than the thorax, transverse 

 behind ; the prothorax as long as the head, a little narrowed in front, and having a 

 distinctly rounded slope from the apex to the head, the apex slightly arcuate. Median 

 segment with a gradually rounded slope to the apex, which is oblique ; it has no furrow. 

 Abdomen a little longer than the head and thorax united, not much compressed. The 

 antennae are short and thick ; the scape covered with long hairs ; the nagellum with a 

 microscopic pile; the joints a little dilated beneath. The head and thorax bear a 

 longish black pile. The tibise bear a few longish spines ; the spurs of the hind pair 

 are thick, and do not reach the middle of the metatarsus. The Mexican example is 

 barely 9 millim in length. 



i 29. PompiluS Championi. (Tab. XI. figg. 17, head; 17 a, wing.) 

 Long. 13 millim. 



Eab. Guatemala, near the city {Champion). 



Of similar form, size, and colour (blue, with purple reflections) to P. imperialis ; but 

 it wants the velvety pubescence, the body being quite glabrous and shining. Eyes 

 converging beneath ; the ocelli hardly forming a triangle, the hinder ones separated 

 from each other by about the same distance they are from the eyes ; clypeus broadly 

 rounded ; the cheeks covered with long white pubescence. Head transverse or nearly 

 so behind. Antennae shorter than the thorax, tapering towards the apex, the joints a 

 little dilated beneath ; the third joint distinctly shorter than the fourth. Prothorax as 

 long as the head, having a gradually rounded slope to the base ; the base with a dense 

 tuft of hair ; the apex angulated. Median segment smooth, with a gradual slope to 

 the apex, and without a furrow. Abdomen longer than the head and thorax united, 

 smooth and shining. Legs of moderate stoutness; the tibiae with short, thickish 

 spines ; the long spur of the hind tibiae reaching beyond the middle of the metatarsus ; 

 claws simple, but thickened into a blunt tooth-like process at the base. For neuration, 

 see Tab. XL fig. 17 a: as will be seen from the figure, the transverse basal nervure is 

 not interstitial. 



The spurs are longer and thinner than they are in P. imperialis, and want the 

 brush. P. championi differs also from that species in the apex of the prothorax being 

 angulated. 



