114 E. T. CRESSOiV. 



iial line; antennre short and thick, browu-sericenus beneath; posterior 

 margin of the prothorax arcuate; metathorax rounded above, subtrun- 

 cate behind, finely and transver!<ely rugose ; wings uniformly pale fuli- 

 ginous, violaceous, darker at tips ; marginal cell long, narrow, acute at 

 tip; second submarginal cell obli((uely quadrate; third submarginal 

 larger than the second, nearly quadrate, being only slightly narrowed 

 towards the marginal, and receiving the second recurrent nervure a 

 third from the base; legs stout, shining black, covered with a brown 

 sericeous pile ; tarsi brownish ; tibij^ not strongly serrated ; abdomen 

 broad-ovate, subconvex, black, polished above, not much nai'rowed at 

 base; apex with brown hairs. Length 7? lines. 



^rt6.— New York, (Coll. Am. Ent. Soc.) 



Two 9 specimens. Much more robust than nehulosiia, with the an- 

 tennas scarcely two-thirds as long, and with the abdomen smooth and 

 polished. 



fij. Pompilus (Priocnemis) subopacus, n. sp. 



Female. — Black, subopaque ; clypeus much produced, its anterior 

 margin arcuate; antennas brownish beneath; thorax compressed at 

 the sides; posterior margin of the prothorax angular; metathorax 

 rounded ; wings rather short, pale fuliginous, the apex broadly mar- 

 gined with d-irk fuliginous, posterior wings subhyaline; marginal cell 

 rounded at tip, second submarginal pointed towards the base of the 

 wing, the third larger and nearly quadrate ; basal series of transverse 

 uervures dislocated ; legs black, tarsi brownish ; tibite rather strongly 

 serrated; abdomen oblong-ovate, convex, apex with numerous brown- 

 ish hairs. Length 5 lines; expanse of wings 7? lines. 



Male. — Closely resembles the 9 ! but the wings are paler, with the 

 apical margin broader and more blackish, and the tibiiB are very slight- 

 ly serrated. JiCngth 5] lines. 



Hab. — Pennsylvania, (Coll. Am. Ent. Soc.) 



Two ( S 9 ) specimens. 



fiC. Pompilus (Priocnemis) fulgifrons, n. sp. 



Female. — Slender, black, strongly sericeous; head large, black, po- 

 lished, the face, clypeus, cheeks and mandibles at base, bright golden ; 

 anterior margin of the clypeus truncate ; palpi brownish sericeous ; an- 

 tennjxj long, rather slender, black, brownish sericeous beneath, the 

 scape beneath golden; pro- and mesothorax and scutellum smooth and 

 highly polished, sides of the prothorax and the collar golden sericeous; 

 posterior margin of the prothorax subangular ; metathorax rounded; 

 smooth, opaque, slightly gulden sericeous at tip; thorax beneath gol- 



