1897.] NATURAL SCIENCES OF PHILADELPHIA. 257 



with dense silvery pubescence, head clothed with long pale hairs ; 

 clypeus truncate anteriorly ; front and vertex with a peculiar wrinkle- 

 like sculpturing ; eyes well separated from base of mandibles, almost 

 parallel within, separated above by a distance greater than the com- 

 bined length of the pedicellum and joints 1 and 2 of flagellum ; space 

 between hind ocelli slightly greater than that between them and 

 eyes ; antennse short, flagellum with joints irregular or swollen be- 

 neath, joints 1 and 2 about equal in length ; pronotum subangulate 

 (almost arcuate) behind ; middle segment subtruncate, impressed 

 down middle, legs with strong, though not dense, spines, claws bifid, 

 longer spur of hind tibia? slightly more than half as long as first 

 hind tarsal joint; abdomen short, compressed, a yellow spot on last 

 dorsal ; wings subhyaline, iridescent, apical margin of anteriors 

 broadly fuscous, second submarginal nearly quadrate, third smaller, 

 shortly petiolate. Length 11 mm. 

 Corumba (April). One specimen. 



Pompilus personatus n. sp. 



$ . — Colored like annulipes, except that the hind femora and the 

 middle and hind tarsi are reddish, and the flagellum black ; pubes- 

 cence or pile of head and thorax bright silvery, that on front and 

 thorax above somewhat golden ; clypeus slightly incurved anteriorly ; 

 front and vertex smooth, at most with very fine punctures ; eyes 

 separated from base of mandibles but by a much less distance than 

 in annulipes, separated above by a distance about equal to combined 

 length of pedicellum and flagellum joints 1 and 2; space between 

 hind ocelli slightly less than that between them and eyes; thorax 

 and legs as in annulipes, but calcaria reddish ; abdomen rather de- 

 pressed, last dorsal segment with silvery pile; wings colored as in 

 annulipes, with the apex of both wings dark, second submarginal 

 cell almost oblong, larger than the third, which while greatly nar- 

 rowed above, is not petiolate. Length 10-11 mm. 



Corumba (April) ; Santarem. Two specimens. 



Pompilus conterminus Sm. 



Chapada (March, April) ; Pedra Branca (April). Three spec- 

 imens. 



Pompilus fulgidifrons n. sp. 



9 . — Black ; first two abdominal segments red : face, clypeus, 

 thorax beneath with silvery pile ; tarsi obscurely reddish ; clypeus 

 finely and closely punctured, its fore margin gently incurved ; front 



