1893.] NATURAL SCIENCES OF PHILADELPHIA. 5ll 



coriaceous, the sides likewise, the posterior face finely and trans- 

 versely striated; legs ample, tolerably well armed with spines; ab- 

 domen above impunctate, the last two ventral segments sparsely 

 punctured; pygidial area flat, with distinct, large, sparse punctures, 

 its length is about two- and- a- half times longer than it is wide at the 

 base. Black; anterior margin of the clypeus, mandibles except base, 

 spot on scape at apex beneath, the tarsi, medial tibia", the hind legs 

 except coxa? and trochanters, and the abdomen red; face, front, 

 clypeus and the thorax, especially in the sutures, with silvery pu- 

 bescence; the femora and abdomen with silvery pile, which is most 

 profuse on the abdomen; teguhe and nervures testaceous; wings sub- 

 hyaline, the marginal cell obliquely truncate, width of the third sub- 

 marginal cell at the top greater than the width of the second at the 

 same place. Length 12 mm. 

 State of Washington. 



4. — Tachysphex spinosus n. sp. 



9 • — Clypeus with large deep punctures, its fore margin rounded- 

 out, and armed with a tooth laterally; front finely and closely punc- 

 tured throughout; the vertex with the punctures finer; space be- 

 tween the eyes at the top about equal to the length of antennal joints 

 2 and 3 united; first joint of the flagellum about one-quarter shorter 

 than the second; dorsulum with tolerably strong and very close 

 punctures, depressed in the middle for about two-thirds its length, 

 the punctures closest anteriorly; scutellum punctured like the dor- 

 sulum, not impressed; metathorax above finely coriaceous, the sides 

 likewise, but shining, the posterior face transversely striated; legs 

 strongly armed with spines, especially the first joint of the tarsi ; 

 abdomen above impunctate, the last two ventral segments with large, 

 sparse punctures; pygidial area somewhat convex - , with indistinct 

 scattered punctures, its length is about twice or perhaps less than 

 twice greater than its width at the base. Black; mandibles in the 

 middle, spot on scape beneath at apex and fore tarsi reddish- testa- 

 ceous; four hind legs except the coxa?, trochanters and femora and 

 base of tibiie of medial legs, and the abdomen bright red; face, clypeus 

 and thorax more or less, with silvery pubescence; femora and ab- 

 domen with silveiy pile, which is most obvious on the abdomen when 

 viewed from behind; tegulre testaceous ; wings subhyaline, iridescent, 

 the nervures black; marginal cell subacute at apex; width of the 



