AMERICAN HYMENOrTERA. 157 



tinged with fuscous at tips; legs moderately stout, tibial spurs pale, posterior 

 coxse beneath nude and closely punctured; abdomen oblong-ovate, shining at 

 tip; first segment gradually and rather broadly dilated at tip and more or less 

 distinctly longitudinally aciculate; base of second segment more sparsely and 

 strongly punctured than remainder, gastrocoeli tolerably large and not deep, 

 sometimes tinged with ferruginous. Length .30 inch. 



Bab.— White Mts., N. H., (Morrison) ; Brit. Col., (Crotch). The 

 specimen from British Columbia has base of second abdominal segment 

 strongly tinged with ferruginous. 



63. ventralis, Cress. Proc. Ent. Soc. Phil, iv, p. 250, % . 



Ilab. — Colorado. This is much like apicalis, but more slender ; 

 the tegulae and scutellum bright lemon-yellow, as well as the norvures 

 of the wings at base; the legs are lemon-yellow, except the posterior 

 coxae, their femora and tips of their tibiae which are black; the lateral 

 edges of abdominal segments two to five and the two apical ones 

 entirely, are fulvous; venter entirely yellowish; wings subhyaline. 

 Length % .50 — .55 inch. 



64. apicalis, Cress. Proc. Ent. Soc. Phil, iii, p. 152, % . 



Hab. — Colorado. A dull black species, with pale smoky subviola- 

 ceous wings and apex of abdomen fulvous; scutellum with a dull 

 yellowish spot; face, clypeus, scape beneath, and four anterior legs 

 in front bright lemon-yellow ; coxse black, remainder of legs pale 

 ferruginous; mesothorax, scutellum and pleura polished. Length S 

 .55 inch. 



65. semilaevis, Cress. Proc. Ent. Soc. Phil, iii, p. 142, 9 . 



Hab. — Colorado. This is a immaculate black species with meso- 

 thorax, scutellum and pleura polished and sparsely punctured ; the 

 femora robust and ferruginous ; the abdomen with a faint bluish 

 tinge, densely punctured and longitudinally rugose on basal middle 

 of second segment, gastrocoeli deep; postpetiole longitudinally acicu- 

 lated; antennae short, robust, with a narrow pale annulus on flagellum ; 

 the face is broad and unusually short; coxal scopa distinct. Length 

 9 .55 inch. 



60. similaris, Prov. Nat. Can. vii, p. 26, % . 



Hab. — Canada, (coll. Provancher). This rare species is black, 

 opaque, the thorax above and laterally shining; face and clypeus 

 yellowish-ferruginous, shining, suture and foveae of clypeus black, 

 also a black dot beneath antennae; scape pale beneath; scutellum 

 flattened, pubescent, punctured; wings hyaline, nervures black, stigma 

 fulvous; legs fulvo-ferruginous, coxae and trochanters black ; postpetiole 

 aciculated, gastrocoeli large and deep. Length S .65 inch. 



