118 S. A. ROHWER. 



scutellum. Squamas rather short and not strongly curved, apex 

 sharp; spine very short, stout, sharp, strongly tapering to apex, 

 channeled above. Metanotum with strong ridges; metapleuras with 

 strongly transverse striae; posterior face bounded laterally by strong 

 ridges, punctured, fovea triangular, sharply pointed. Legs rather 

 strongly spined. Abdomen dorsally shining, with rather large sparse 

 punctures; first segment with a dimple in the middle; ventrally the 

 abdomen is more sparsely punctured; the ventral segments ridged, 

 so when the abdomen is seen at certain angles it appears to have lateral 

 spines. Pygidium much narrower at the rounded apex than at the 

 base. Color black; tegulae pale brownish; tarsi with a brownish tinge; 

 a small whitish spot on the first four abdominal segments at the side. 

 Face with silvery pile; apex of the abdomen with coarse red hair; 

 rest of insect nude. Wings slightly yellowish hyaline; venation red- 

 dish-brown. 



Habitat. — Pullman, Washington, August 2, 1908. Collected 

 by Mr. W. M. Mann, for whom it is named. 



This species has its nearest ally in O. subulatus Rob., but 

 it is blacker than that species usually is, the sculpture of the 

 dorsulum and scutellum is different, and the spine is shorter. 



Oxybelus denverensis n. sp. 



Female. — Length 8 mm. Anterior margin of the clypeus as usual, 

 process rather pointed, not as prominent as in manni. Mandibles with 

 a small tooth within near the base. Head closely punctured, the punc- 

 tures of the vertex a little sparser; punctures of the cheeks elongate 

 appearing striato-punctate; vertex with a median tubercle. Antennas 

 subclavate, third joint longer than the fourth. Pronotum not strongly 

 carinated, lateral angles sharp. Dorsulum with large separate punc- 

 tures, shining, impressed in the middle anteriorly; mesopleurae punc- 

 tured like the dorsulum, but posteriorly the punctures are smaller and 

 become elongate. Suture between the scutellum and the dorsulum 

 foveolated; scutellum punctured like the dorsulum, with a median 

 carina; postscutellum without a carina. Squamae rather slender, 

 strongly curved, spine rather long, almost parallel-sided, but a little 

 wider at the apex; channeled above, at the apex either entire or 

 slightly emarginate, at some angles it looks entire, at others emarginate. 

 Metanotum with a smooth space below the spine, the rest with oblique 

 striae; metapleurae polished, shining, at the sides with fine transverse 

 striae; posterior face strongly margined laterally; fovea . shining, 

 sharply defined, triangular, the rest of the posterior face with fine, 

 close punctures. Legs only moderately spinose. Abdomen dorsally 

 with distinct, separate punctures; first segment not impressed; ven- 

 trally the abdomen is shining, with very few punctures; pygidium 

 normal. Color black; tubercles, postscutellum, tibiae and tarsi exter- 



