NORTH AMERICAN HYMENOPTERA. 263 



hairs, base of mandibles pale honey yellow, tips castaneous, clothed with glitter- 

 ing pubescence, clypeus round ; eyes large, round, prominent ; antennae : scape 

 pale honey yellow, clothed with yellow sericeous pubescence, Hagelluni yellowish 

 fuscous; thorax elongate ovate, slightly narrowed posteriorly, pro- and meso- 

 thorax closely punctured, metathorax obliquely truncate, coarsely and confluently 

 punctured ; wings hyaline, with a faint fuscous cloud before the apex, two sub- 

 marginal cells, the marginal cell sublunate, roundly truncate at tip, first submar- 

 ginal large, elongate subquadrate, second small, subconical, pointed towards the 

 base and receiving the recurrent nervure near the base ; stigma large, occupying 

 the greater part of the marginal cell ; tegulae small, pale honey yellow ; legs 

 uniformly pale honey yellow, thinly clothed with glittering hairs; abdomen 

 elongate ovate, petiolate, petiole long, pyriform, closely covered with confluent 

 punctui-es, second segment finely punctured, third segment with a narrow, trans- 

 verse, castaneous band on disc at middle, apical margins of the fifth and sixth 

 segments fringed with pale pubescence, entire abdomen thinly clothed with erect 

 glittering white hairs, ventral surface same as above. Length 10 mm. ; expanse 

 of wings 14 mm. 



Hab. — Arizona. 



Photopsis Belfragei Blake. 



Male. — Uniform fuscous, shining, thinly clothed with erect whitish hairs; head 

 rounded, as wide as the thorax, very finely punctured ; eyes very large, round, 

 prominent, as well as the ocelli ; antennte luteous, as long as the head and thorax ; 

 tips of the mandibles black ; thorax elongate, subparallel, rounded in front, pro- 

 and mesothorax very finely punctured, metathorax roundly truncate, coarsely 

 reticulated ; tegulte small, honey yellow ; wings hyaline, faintly iridescent, hav- 

 ing a large fuscous cloud just beyond the marginal cell, darker towards the base; 

 marginal cell short, rounded at tij), two distinct .submarginal cells, the second 

 suhtriangular, narrowed towards the base and receiving the two recurrent ner- 

 vures; stigma as long as the marginal cell, which encloses three-fourths of it, 

 pale yellow ; nervures hyaline ; legs pale yellow, except the femora, which are 

 fuscous, clothed with scattered long hairs ; trochanters broadly dilated ; abdomen 

 elongate ovate, coarsely punctured, first or petiole segment more than one-third 

 the length of entire abdomen, its apical half suddenly enlarged and ovate, third 

 segment nearly black ; segments fringed with pale hairs, the apex armed with 

 an acute, recurved spine. Length 13 mm. ; expanse of wings 18 mm. 



Hab. — Texas. 



This species is closely allied to P. nubecula Cresson, but is readily 

 distinguished by having two submarginal cells and the sudden dila- 

 tation of the basal segment of the abdomen. 



Photopsis triangularis Blake. 



Male. — Uniform dark honey yellow; head small, suhtriangular, closely punc- 

 tured; eyes large, prominent; tips of mandibles black; antennte flavo-fuscous ; 

 thorax ovate, narrowed posteriorly, mesothorax with two longitudinal impressed 

 lines, coarsely punctured ; scutellum rounded, finely punctured ; metathorax 

 coarsely reticulate; wings yellowish hyaline, marginal cell ovate lonceolate, first 

 submarginal long and narrow, secom^ suhtriangular, its basal nervure arcuate, 

 receiving the fir.st recurrent near the base ; stigma small, fuscous ; legs rufo-fus- 



