264 CHARLES A. BLAKE. 



cous about the joints, thinly clothed with scattered pale hairs; abdomen elon- 

 gate ovate, petiolate ; basal segment subpyxiform, second segment shining, 

 minutely and remotely punctured, bearing a few scattered, long, pale hairs ; re- 

 maining segments fringed with long, pale pubescence ; apex fuscous. Length 

 9 mm. ; expanse of wings 17 mm. 



Hab. — Nevada. Collection of Mr. Norton. 



This species is easily recognized by the triangular head. 



Photopsis attenuata Blake. 



Male. — Uniform dark honey yellow; head round, shining; eyes large, promi- 

 nent; antennae honey yellow; thorax elongate ovate, shining, finely punctured, 

 disc of mesothorax elevated, sides closely punctured, metathorax closely and 

 finely reticulate, gradually roundly truncate ; wings moderate, hyaline, with a 

 faint fuscous cloud in the apical region, marginal cell ovate, truncate at tip, first 

 submarginal large, second very small, subtriangular, receiving the second recur- 

 rent nervure before the middle ; stigma large, yellowish, lying almost wholly 

 within the marginal cell ; tegulae minute, pale honey yellow ; legs pale honey 

 yellow, thinly clothed with concolorous hairs ; abdomen elongate, petiolate, 

 petiole one-third the length of the entire abdomen, pyriform, densely punctured, 

 second segment finely punctured, third castaneous ; entire insect sprinkled with 

 erect whitish hairs. Length 4.5 mm. ; expanse of wings 11 mm. 



Hab. — Texas. Belfrage. 



Photopsis ferruginea Blake. 



Male. —Uniform ferruginous; head not as wide as thorax, finely punctured ; 

 eyes large, prominent ; tips and upper edges of mandibles blackish ; flagellum 

 of antennae fuscous, slightly pruinose ; thorax ovate, narrowed posteriorly, meso- 

 thorax with two longitudinal, parallel, impressed lines ; scutellum rounded, 

 closely punctured, metathorax coarsely reticulate, flanks punctured ; wings fus- 

 cous, marginal cell ovate lanceolate, first submarginal small, narrow, second sub- 

 quadrate, receiving the first recurrent about the middle, stigma small, fusco-fer- 

 ruginous ; tegulae polished, dark honey yellow ; legs thinly clothed with scattered 

 hairs ; abdomen elongate ovate, petiolate, shining, thinly clothed with erect pale 

 hairs ; basal segment subpyriform, second minutely and remotely punctured. 

 Length 11 mm. 



Hab. — Nevada. 



Photopsis melaniceps n. sp. 



Male. — Head black, shining, transversely rounded, narrowed posteriorly, as 

 wide as the thorax and bearing a few erect, glittering white hairs, minutely 

 punctured ; eyes and ocelli large and prominent ; scape of antennae pale honey 

 yellow, flagellum slightly darker ; face beneath the antennae honey yellow ; tips 

 of mandibles blackish ; thorax ovate, dark honey yellow ; pro- and mesothorax 

 finely punctured, thinly clothed with erect pale hairs, metathorax roundly trun- 

 cate, coarsely and confluently punctured ; wings hyaline, with a small fuscous 

 cloud beyond the marginal cell, which is narrow and roundly truncate at tip, two 

 submarginal cells, the first long and pointed at base, the second elongate subtri- 

 angular, its outer nervure sinuate and receiving both recurrent nervures, the first 

 at the base and the second a little before the middle ; stigma pale honey yellow 

 and lying three-fourths within the marginal cell ; tegulae small, pale honey yel- 



