194 HYMENOPTERA. 



as the thorax, the apex with a few longish hairs. Legs longish, stout; the tibial 

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

 metatarsus ; the claws with a short basal tooth. The basal nervure is not interstitial. 

 For neuration, see Tab. XI. fig. 11. The neuration, especially as regards the form of 

 the second cellule, is quite distinct. A well-marked species. 



The anal nervure in hind wings interstitial ; the basal nervure not interstitial, 

 , (Species 24-41.) 



24. Pompilus pulchrinellllS. (Tab. XL figg. 12, head ; 12 a, wing.) 



Long. 18 millim. 



Hab. Mexico, Northern Sonora (Morrison). 



Head alutaceous, transverse behind, covered with long dark fuscous hairs; eyes 

 diverging beneath; the hinder ocelli separated from each other by a less distance than 

 they are from the eyes ; clypeus transverse at the apex, more shining than the vertex, 

 and bearing a few punctures. Thorax alutaceous, bearing long black hairs ; the 

 prothorax short, behind angular. Median segment with the apex having an oblique 

 hollowed slope, and furrowed down the centre. Abdomen sessile, shorter than the 

 head and thorax united ; the pygidium and the ventral surface with some long black 

 hairs. Legs longish ; the tibial spines short and thick ; the long spur of the hind 

 tibiae reaching to the middle of the metatarsus ; the fore tarsi with long comb-spines, 

 the tarsi beneath thickly spinose ; the long spines at the apices of the joints and the claws 

 testaceous ; the claws simple, dilated at the base. For neuration, see Tab. XL fig. 12 a, 



^ 25. Pompilus alticola. (Tab. XL fig. 13, wing.) 

 Long. 12 millim. 



Hab. Mexico, Xucumanatlan in Guerrero 7000 feet (H. H. Smith). 



Black, sparsely pilose ; wings short, fuliginous, with a slight purplish tinge. Eyes 

 almost parallel ; the ocelli hardly forming a triangle, the hinder ones separated from 

 each other by a distinctly less distance than they are from the eyes ; clypeus minutely 

 punctured, the apex broadly rounded, the centre slightly incurved. Antennae short, 

 microscopically pilose ; the third joint longer than the fourth. Prothorax shorter than 

 the head ; the apex bluntly angulated. Median segment gradually rounded to the 

 apex ; a broad shallow furrow down the centre. Abdomen shorter than the head and 

 thorax united, subsessile ; the apex above bearing thick bristle-like hairs, beneath the 

 hairs are softer and more slender. Legs stout ; the tibial spines short and thick ; the 

 long spur of the hinder tibiae reaching a little beyond the middle of the metatarsus ; 

 the claws with a short basal tooth. For neuration, see Tab. XL fig. 13. The basal 

 nervure is not interstitial. 



The male has the antennae longer than the head and thorax united, microscopically 



