1893.] NATURAL SCIENCES OF PHILADELPHIA. 509 



20 — Emargination of fore femora rounded. Length 7 mm. . exsectus. 



Emargi nations of fore femora more or less angular. Length 10 



mm compactus. 



1. — Tachysphex Ashmeadii u. sp. 



9 . — Clypeus with sparse, large punctures,its fore margin rounded- 

 out, subtruncate medially and scarcely produced into a tooth later- 

 ally; front coarsely and closely punctured; vertex finely punctured, 

 the occiput even more so; space between the eyes at top about equal 

 to the length of antennal joints 2 and 3 combined; first joint of the 

 flagellum about one- fifth shorter than the second; dorsulurn with 

 rather strong, close punctures, depressed medially almost its full 

 length ; scutellum convex, not impressed, punctured like the dorsu- 

 luni; metathorax above finely coriaceous, on the sides and posteriorly 

 very finely striated, the posterior face with a large, triangular fovea 

 at the top; legs ample, tolerably well armed with spines, which ex- 

 cept at the apex of the joints, are lacking on the hind tarsi; margi- 

 nal cell not truncate at apex, more or less pointed; width of the 

 second submarginal cell at the top greater than the width of the third 

 submarginal at the same place; abdomen about as long as the head 

 and thorax tOgother, seemingly impunctate: pygidial area flat, with 

 some indistinct, large, sparse punctures, its length about two-and- 

 a-half times greater than its width at the base. Black; clypeus an- 

 teriorly, mandibles in the middle and spot on scape at apex beneath, 

 reddish-yellow; all the legs (except coxa?, trochanters and anterior 

 femora above) and the abdomen entirely, bright red; upper half of 

 clypeus, face, front and thorax, especially the mesopleura?, with sil- 

 very pubescence; femora and abdomen with a silvery pile, which is 

 most conspicuous on apical half of dorsal segments 1-4 when viewed 

 from behind; teguke testaceous; wings subhyaline, iridescent, nerv- 

 ures testaceous. Length 10 mm. 



San Diego, California, August 23rd, 1891 (Dr. F. Blaisdell). It 

 gives me pleasure to dedicate this pretty species to Mr. Wm. H. 

 Ashmead, as a slight recognition of the many favors which I have 

 received from him. 



2. — Tachysphex Belfragei Cress. 



Larrada Belfragei Cr., Tr. Amer. Ent. Soc. IV, 1872, p. 215. J . 

 Larra Belfragei Patton, 1. c. p. 389. 



9 • — Clypeus with lai'ge sparse punctures, its anterior margin 

 rounded out, einarginate medially and produced into two teeth at 



