NORTH AMERICAN HYMENOPTERA. 259 



Robust; fusco -ferruginous; wings yellowish hyaline, first subniar- 



ginal cell small and narrow astjanax. 



Eobust, uniform honey yellow ; wings yellowish hyaline, the mar- 

 ginal cell broadly ovate inconspicuus. 



Head round, wings hyaline, stigma large, pale fuscous, lying almost 



within the marginal cell..., miiiuta. 



Wings with three submarginal cells. 

 Ferruginous ; head round, not as wide as thorax ; wings yellowish hyaline, 

 marginal cell ovate, lanceolate, truncate at tip, third submar- 

 ginal cell narrowed beneath, its outer nervure nearly obso- 

 lete uro. 



Third submarginal cell narrow, transversely elongate quadrate, color dark 

 castaneous, with pale pubescence ; antennse and legs paler ; 

 apex of first abdominal segment nearly as broad as the base 



of the second castanea. 



Medium ; head black, clypeus and mandibles dull honey yellow, concol- 



orous with body; legs paler glabrella. 



Second abdominal segment immaculate li.yalina. 



Eobust, apical segments of abdomen clothed with yellow pubescence ; 

 wings yellowish, more or less faintly clouded, stigma pale 



honey yellow iiebulosus. 



Dark honey yellow, shining, apical segments of abdomen polished, 



pale honey yellow basally,* apically margined with fuscous ; 



marginal cell broadly ovate, stigma fuscous.. abdomiiialis. 



Bright honey yellow, second abdominal segment with lateral 



black line pallida. 



DIVISION I. 



Abdomen more or less petiolate, as in figs. 17 and 18 ; wings with 

 two submarginal cells. 



Fig. 17. Fig. 18. 



Photopsis mendica Blake. 



Male.— Uniform brown-black ; head round, densely punctured, thinly clothed 

 with scattered, long, yellowish white hairs ; eyes round, polished, prominent ; 

 mouth clothed with yellowish hairs ; antenna? rufo-fuscous, as long as the head 

 and thorax ; thorax ovate, narrowed posteriorly, closely punctured, clothed with 

 yellowish white hairs; sides, metathorax and scutellum reticulate, the latter 

 finely; tegulse convex, polished; wings ample, yellowish hyaline, paler about 

 the apex ; marginal cell elongate ovate, rounded at tip, first submarginal elongate 

 subquadrate, pointed towards base ; second short, obliquely subquadrate, its basal 

 nervure sinuate ; third obsolete ; costal cell moderately wide, stigma honey yel- 



