1865.] 129 



men ovate, convex, bright ferruginous, the three apical segments black- 

 ish-fuscous. Length 31 lines; expanse of wings 5 lines. 



Collection. — Ent. Soc. Philad. One specimen. 



Belongs to the subgenus Priocnemis. 



Pompilus subargenteus, n. sp. 



Black ; covered with a silvery-sericeous pile ; posterior margin of prothorax 

 whitish; wings fuscous, third submarginal cell petiolated ; abdomen with a 

 broad ferruginous band near the base; legs spinose. 



Male. — Deep black, opaque, covered with a fine silvery-sericeous pile, 

 more distinct iu certain lights, especially on the face and posterior 

 margin of the metathorax; antennae porrect, thickened; posterior mar- 

 gin of the prothorax narrowly obscure whitish; metathorax rounded 

 behind ; tegulse piceous. Wings fuscous, darker at tips ; nervures 

 blackish ; third submarginal cell subpetiolated or triangular. Legs 

 black, with a fusco-sericeous reflection; the coxae silvery-sericeous; the 

 four posterior tibiae and tarsi spinose, the inner tibial spurs very long. 

 Abdomen elongate, narrow, sessile, subconvex ; apical margin of the 

 first, the second entirely and the basal half of the third segment bright 

 ferruginous; apical segment silvery. Length 4J lines; expanse of 

 wings 7 lines. 



Collection. — Dr. J. Gundlach. One specimen. 



Pompilus violaceipes. n. sp. 



Black; thorax and abdomen above ferruginous, the latter strongly tinged with 

 beautiful violet: legs deep violet, very slightly spinose; wings fuscous, the an- 

 terior pair with a strong brassy gloss, the tip violet; posterior pair subhyaline. 

 Female. — Head rather large, opaque black, the clypeus broad and 

 large, faintly tinged with purple; antennae black, involute. Thorax 

 black ; disk of prothorax ferruginous, the sides black tinged with violet ; 

 mesothorax with its middle obscure ferruginous, black on each side ; 

 scutellums dull ferruginous; pleura entirely opaque black; metathorax 

 subelongate, gradually rounded behind, covered with a beautiful silvery- 

 sericeous pile, the dorsal middle broadly ferruginous, the sides opaque 

 black, with a few ill-defined transverse striae; tegulae black. Wings 

 long, uniformly fuscous, with a very strong brassy gloss, the tips vio- 

 laceous ; neiwures black ; third submarginal cell half again as large as 

 the second; posterior pair subhyaline, iridescent, clear at base. Legs 

 long, black, with a beautiful deep violet reflection, very slightly spinose; 

 inner spur of the posterior tibiae ciliated above near the base. Abdo- 

 men subpetiolated, convex, subovate, ferruginous above, with a strong 

 and beautiful violet or purple reflection, less obvious at base, deeper 



