210 AMERICAN HYMENOPTERA. 



truncate. The head and thorax black, tegulse and nervures and stigma of wing 

 testaceous, otherwise the wing is yellowisla transparent, with a brownish tint. 

 The legs are a brownish testaceous, excepting the coxse, trochanters and the 

 greater portion of the middle femora, which are black or blackish. The poste- 

 rior femora brownish at base. Abdomen concolorous with the posterior tibiae. 



Type. — University of Kansas. 



Type locality. — Clark Co., Kansas, 1962 ft. 



One male collected in May by F. H. Snow. 



Ancistroinnia ptenerugosa u. sp. 



Superficially like the black form of rugosa, but differs in sculp- 

 ture, notably in the more shining mesonotura and in the less dis- 

 tinct punctures on the scute! lum. 



% . — 8 mm. — Anterior margin of the clypeus rounded and entire. Front and 

 vertex much the same as in tachysphecoides. 



The depressions or furrows, however, distinct. Space between the eyes at top 

 approximately three-fourths the distance between the eyes at base of clypeus. 

 First joint of the antennae as long as the second and third joints combined. The 

 second joint two-thirds the length of the third, and the third approximately as 

 long as the fourth, and the fourth a little longer than the fifth. Dorsulum shin- 

 ing and compactly punctured. Scutellum with a slight median longitudinal de- 

 pression. Metathorax above granular and rugulose. To some extent trans- 

 versely striate, with at least three longitudinal, rather indistinct ridges, that are 

 parallel and close together. The dorsal aspect of the metathorax slightly over- 

 hanging the posterior aspect, which has a median longitudinal sulcus and is gran- 

 ular. Abdomen compactly punctured with small shallow punctures. Entirely 

 black, with the following exceptions: the labium testaceous, tarsi brownish, cos- 

 tal nervure brownish testaceous, stigma very dark brown, the nervures dark 

 brown testaceous, otherwise the wing is transparent, with a brownish blackish 

 tint. 



Type. — University of Kansas. 



Type locality. — Clark Co., Kansas, 1962 ft. 



One male collected in June, by F. H. Snow. 



Tachyspliex crassiformis n. sp. 



9 . — 7 mm. — Distinguished from antennatus, its nearest ally, chiefly by the more 

 robust form and distinctly margined pygidial area. Anterior margin of the 

 clypeus as in antennatus. Front finely granulated, except near the anterior ocel- 

 lus, where it is sparsely punctured. Vertex finely and closely punctured. Space 

 between the eyes across the vertex approxinjately one-third the distance between 

 the eyes at base of clypeus. A deep rather arcuate transverse sulcus between 

 the eyes on the vertex. 



Connected with the ocellar space by a shallow rather narrow groove. First 

 joint of the antennje nearly as long as the second, third and fourth joints com- 

 bined. The second joint half the length of the third, and third joint approxi- 

 mately as long as the fourth. 



