198 E. T. CRESSON. 



except lateral margin of fourth, black ; wings yellow, apical margins 

 fuliginous ; scutellum gibbous, convex ; prominent disc of metathorax 

 polished and fulvous ; apex of posterior femora within blackish ; first 

 abdominal segment strongly elevated and subpyramidal before apex. 

 Length 1 inch. 



16. Bolteri, Cress. Trans. Am. Ent. ii, p. 94, % . 



Hub. — Lake Superior, (coll. Bolter). Black ; face, orbits, clypeus, 

 mandibles and palpi lemon-yellow ; tegulse, spot before, and scutellum, 

 fulvous; wings yellow, slightly dusky at tips; legs yellow, varied with 

 fulvous, posterior coxae at base and their femora behind black, extreme 

 tips of their tibias within and basal joint of their tarsi dusky; first 

 segment of abdomen except base, second entirely, third except base 

 and ventral segments two to five, yellowish-fulvous; basal segment 

 gibbous before apex. Length S .85 inch. 



17. Copei, Cress. Trans. Am. Ent. Soc. ii, p. 94, % . 



Hah. — West Virginia. Black; white spot on each side of face; 

 abdomen, except petiole, entirely fulvo-ferruginous ; wings blackish- 

 violaceous. Length S .82 inch. 



18. canadensis, Prov. Nat. Can. ix, p. 2. 



Copei, Prov. {not Cress.), Nat. Can. vi, p. 335, S 9 . 



Hah. — Canada. Black ; tibiae, tarsi and abdomen except petiole, 

 fulvous ; wings uniformly dark fuliginous, with a strong aeneous 

 reflection; antennae sometimes varied with fulvous; first abdominal 

 segment elevated and subpyramidal before apex. Length % 9 -90 — 

 .95 inch. 



Quite distinct from Copei. 



19. Rileyi, Cress. Trans. Am. Ent. Soc. ii, p. 95, 9 . 



Ilah. — Illinois, (coll. Riley). Large, ferruginous; tips of mandi- 

 bles and of antennae, black; wings fuscous, with a golden gloss, stigma 

 fulvous, nervures black ; basal third of marginal cell, base of both 

 wings and a costal streak on posterior pair yellow ; legs and thorax 

 beneath golden-sericeous; first segment of abdomen elevated and sub- 

 pyramidal before apex. Length 9 1.08 inch. 



20. mellosus, Cress. Rep. Wheeler Exp. p. 708, 9 . 



llah. — New Mexico. Large, fulvous; head, antennae except tips, 

 and tibiae and tarsi yellow; tips of antennae and narrow basal margin 

 of third abdominal segment black ; a fuscous stripe over tegulae ; 

 wings yellow, apical margins fuliginous; scutellum elevated, convex; 

 first abdominal segment elevated and subpyramidal before apex. 

 Length 9 1 inch. 



