256 PROCEEDINGS OF THE ACADEMY OF [1897. 



rounded or subtruncate, divided longitudinally by a rather broad 

 shallow furrow, which is indistinct on posterior surface ; legs with 

 with strong, though not plentiful, spines, claws bifid, no tarsal comb, 

 longer spur of hind tibia? equal to more than half length of first hind 

 tarsal joint; abdomen with a slight purplish cast; wings fuscous, 

 with purplish reflection, hind pair paler, marginal cell short, some- 

 what triangular, second submarginal subquadrate longer than high, 

 third shortly petiolate. Length 10 mm. 

 Santarem. One example. 



Pompilus varius Fabr. 



Two ( S ) specimens in the collection agree with Fabricius' brief 

 diagnosis of this species. Chapada (December) ; Santarem. 



Pompilus ornamentus n. sp. PL IV, f. 13. 



$ . — Black, somewhat iridescent in places; head in front, prono- 

 tum anteriorly, posterior half of middle segment, pleura? with spots, 

 pectus, legs, more or less particularly coxa? and femora beneath ven- 

 tral abdominal segments 1-3 and dorsals 1 and 2 laterally and bas- 

 ally, with silvery-white, sericeous pile, on segments 4-7 it is plum- 

 beus ; clypeus with fore margin slightly incurved ; front impressed, 

 especially before anterior ocellus ; eyes separated from base of man- 

 dibles, converging from above their middle, the space between them 

 above about as great as the combined length of antennal joints 3 and 

 4 ; space between hind ocelli distinctly less than that between them 

 and eyes ; antenna? short, the first and second flagellum joints about 

 equal in length ; pronotum subangulate behind ; middle segment but 

 slightly convex, not impressed, the upper and posterior surfaces not 

 separated ; legs strongly spinose, claws bifid, longer spur of hind 

 tibia? about five-sixths as long as first hind tarsal joint; abdomen 

 depressed, elongato-fusiform ; wings fuscous, paler medially, with a 

 purplish cast, second submarginal subquadrate, distinctly longer 

 than high, third smaller, triangular, greatly narrowed above. 

 Length 13 mm. 



Chapada (December). One specimen. 



Pompilus annulipes n. sp. PI. IV, f. 14. 



$ . — Head, thorax and legs, black ; abdomen and antenna? red ; 

 posterior margin of pronotum and small spot at apex of scape be- 

 neath, yellow; basal half of hind tibia? and joints 1-4 of medial and 

 hind tarsi except their extreme base and apex, whitish ; thorax and 

 base of abdominal segments with grayish pile, the middle segment 



