POMPILUS. 193 



The anal nervure in the hind wings not interstitial. (Species 21-23.) 



J 21. Pompilus montezuma. (Tab. XI. fig. 10, wing.) 



Long. 10 millim. 



Hab. Mexico, Chilpancingo 4600 feet, and Omilteme 8000 feet, both in Guerrero 

 (H. H. Smith). 



Dark blue, the males with a purplish tinge ; wings violaceous ; the head, thorax, and 

 base of abdomen covered densely with longish black hair. Eyes a little converging 

 above ; the hinder ocelli separated from each other by about the same distance they are 

 from the eyes ; clypeus finely punctured round the apex, which is slightly incurved. 

 Antennae longer than the head and thorax united; the third joint distinctly longer than 

 the fourth. Prothorax a little shorter than the head, quadrate, rounded in front, the 

 apex bluntly arcuate. Median segment with the lower half obliquely truncate. 

 Abdomen shorter than the head and thorax united, the apex with a few longish hairs ; 

 the pygidium rough. Legs stout; the tibial spines long; the long spur of the hind 

 tibiae not reaching much beyond the middle of the metatarsus ; claws with a stout 

 basal tooth. For neuration, see Tab. XL fig. 10. 



The male is more slenderly built. It has the antennae longer than the head and 

 thorax united, stout, tapering towards the apex, with the third joint longer than the 

 fourth ; the apex of the abdomen bare, the last segment deeply incised at the apex, the 

 abdomen itself longer than the head and thorax united. 



This species bears a great resemblance to P. alticola ; but it may be easily separated 

 by the interstitial basal nervure and by the apex of the pronotum not being angled. 



22. Pompilus mexicanus. 



Pompilus mexicanus, Taschenberg, Zeitschr. ges. Naturw. xxxiv. p. 52 (1869) \ 

 Hab. Mexico 1 . 



23. Pompilus zapoteCUS, (Tab. XL fig. 11, wing.) 



Long. 7 millim. 



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



Dark blue, sparsely covered with a minute white pubescence ; wings subhyaline, the 

 apex from the end of the radial cellule smoky. Head broader than the thorax ; eyes 

 converging above ; the hinder ocelli separated from the eyes by a greater distance than 

 they are from each other ; clypeus short, densely covered with a white pubescence, the 

 sides oblique, the apex sinuate ; there is a furrow above the antennae. Antennae stout, 

 as long as the thorax, the third joint distinctly longer than the fourth. Prothorax 

 shorter than the head, the apex bluntly angled. Median segment with a gradually 

 rounded slope to the apex ; the sides projecting into blunt teeth. Abdomen as long 



biol. cente.-amer., Hymenopt., Vol. II., September 1893. 2 cc 



