264 CHARLES A. BI.AKK. 



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

 gate ovate, petiolate; basal segment subpyriform. second segment shining, 

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

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

 9 mm. ; expanse of wings 17 mm. 



Hub. — Nevada. Collection of Mr. Norton. 



This species is easily recognized by the trianoular head. 



Pliotopsii^ attenuata Blake. 



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

 nent ; antennje 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; tegulse minute, pale honey yellow; legs pale honey 

 yellow, thinly clothed with concolorous hairs; alidomen 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. 



Fhotopsis ferruginea Blake. 



Male.— Vn\form ferruginous; head not as wide as thorax, finely punctured ; 

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

 of antennse fuscous, slightly pruinose ; thorax ovate, nan-owed posteriorly, meso- 

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

 closely punctured, metathorax coarsely reticulate, flanks punctured ; wings fu.s- 

 cous, marginal cell ovate lanceolate, fir.st submarginal small, narrow, second sub- 

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

 ruginous ; tegulse 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 melaiiieeps u. 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 pi-ominent ; scape of antennae pale honey 

 yellow, flagellum slightly darker; face beneath the antennje 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 aud receiving both recurrent nervures, the first 

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

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



