520 PROCEEDINGS OF THE ACADEMY OF [1893. 



hi ni impressed; upper surface of metathorax transversely rugoso- 

 granulated, the sides rather strongly striated; abdomen if punctured 

 ventrally. it is very finely so. Colored and ornamented like the 9 . 

 Length 7-8 mm. 



Texas; Las Cruces, N. Mexico (T. I). A. Coekerell); Nevada; 

 Montana. The pale wings and sculpture of metathorax will separate 

 this species from the preceding one, while the shape of fore margin 

 of clypeus will distinguish it from terminal ux, which it most re- 

 sembles. The $ differs from that of termwatvs by the coarsely 

 sculptured front. 



18. — Tachysphex terminatus Smith. 

 Larrada terminata Sin., 1. c. p. 291. 

 Larra terminata Patton, I. c. p. 3S9. 

 Larra minor Prov., Add. Hym. Quebec, p. 268. 9 $ 



9 . — Anterior margin of the clypeus subtruncate, not produced 

 in the middle; front finely granulated; vertex strongly punctured; 

 occiput when viewed from behind not, or very slightly, emarginate 

 above; space between the eyes at top about equal to the length of 

 antennal joints 3 and 4 united.if anything slightly less; first joint of the 

 flagellum nearly one-third shorter than the second; dorsulum with 

 tolerably strong and separated punctures, which become close an- 

 teriorly ; scutellum very slightly impressed ; upper surface of the 

 metathorax granulated, the sides distinctly, though not strongly 

 striated; legs not very strongly spined; pygidial area sparsely punc- 

 tured, about two and a half times longer than it is broad at the 

 base. Black; mandibles in middle and scape beneath at apex red- 

 dish; tarsi apical ly reddish- testaceous; last two segments of abdomen 

 bright red ; wings subhyaline, iridescent, nervures testaceous; marg- 

 inal cell obliquely subtruncate ; second submarginal cell at the top 

 wider than the third. Length 9-10 mm. 



$ . — This sex resembles very closely the $ of fusus but differs as 

 follows : Space between the eyes at top distinctly greater than the 

 length of antennal joints 2-4 united; front a little more closely and 

 finely punctured ; anterior margin of clypeus slightly rounded out, 

 not produced medially, the lateral angles sharp, almost dentiform ; 

 dorsulum with the punctures sparser; wings more iridescent; legs less 

 strongly spinose. Length 6 mm. 



Canada to District of Columbia; N. Illinois (Nason); Vancouver. 

 A 9 from Nevada which I take to be a variety of this species has- 



