270 CHARLES A. BLAKE. 



Closely allied to P. dura Cre!>soii, but may be distingui.shed by the 

 greater length of the mai'ginal cell and the absence of the apical 

 fuscous streaks in the wings. 



Pliotopsis Teuustiis n. sp. 



Male. — Robust, uniformly dark honey yellow ; head subquadrate, posterior 

 angles rounded, finely and in-egularly punctured, shining, thinly clothed with 

 erect, pale yellowish hairs ; mandibles finely punctured, black at tips and thinly 

 clothed with pale hairs; eyes large, round aud polished; antennse fuscous, scape 

 clothed with fuscous pubescence; thorax ovate, slightly narrowed posteriorly, 

 pro- and mesothorax finely punctured, clothed with erect yellowish hairs; meta- 

 thorax roundly truncate, coarsely reticulate, thinly clothed with erect white 

 hairs; scutellum very finely punctulate; wings hyaline, two submarginal cells, 

 marginal cell elongate ovate, first submarginal cell long and narrow, second elon- 

 gate subquadrate, pointed towards base and receiving the first recurrent nervure 

 before the middle, stigma small, costal cell wide, tegulfe pale honey yellow ; legs 

 pale honey yellow, clothed with long pale hairs: abdomen ovate, shining, finely 

 and remotely punctured, sparsely clothed with moderately long, whitish hairs; 

 basal segment campanulate, subsessile with the second, apical margins of all the 

 segments fringed with whitish pubescence ; under side of entire insect finely 

 punctured. Length 15 mm. ; expanse of wings 24 mm. 



Hab. — Arizona. 



Allied to P. tapqjos Blake, but may be distinguished by the greater 

 length of the marginal cell, and by being more robust. 



Photopsis juxta Blake. 



Male. — Uniform dark brown ; thinly clothed with whitish hairs ; head rounded, 

 narrowed posteriorly, finely punctured ; eyes large, prominent as well as ocelli ; 

 antenna? pale honey yellow ; mandibles tipped with black ; thorax robust, elon- 

 gate ovate, shining, finely punctured ; mesothorax with four longitudinal im- 

 pressed lines, metathorax roundly truncate, broadly reticulate ; wings moderate, 

 yellowish hyaline; marginal cell broadly ovate, first submarginal elongate, 

 second subquadrate, pointed towards base, its basal nervure sinuate; stigma 

 elongate, its apical three-fourths lying within the marginal cell ; tegulse round, 

 polished, honey yellow, thinly clothed with whitish hairs, calcaria fuscous ; ab- 

 domen elongate ovate, petiole subpyriform, second segment shining, feebly and 

 remotely punctured ; apical margins of all the segments castaneous, thinly fringed 

 with pale yellowish pubescence. Length 9 mm. ; expanse of wings 18 mm. 



Hal). — Texas. Belfrage. 



Photopsis aulus Blake. 



Male. — Uniform dark honey yellow, thinly clothed with erect white hairs ; 

 head subquadrate, posterior angles rounded, shining, very minutely and distantly 

 punctured; eyes large, round, prominent, ocelli modex-ate; scape of antennae 

 honey yellow, scutellum fuscous ; tips and upper edge of mandibles blackish ; 

 thorax elongate subquadrate, rounded in front, pro- and mesothorax finely punc- 

 tured, the latter with four faintly impressed longitudinal lines, metathorax 

 roundly truncate, broadly and shallowly reticulate ; wings moderate yellowish 

 hyaline, marginal cell large, ovate lanceolate, first submarginal cell narrow. 



