AMERICAN HYMEXOPTERA. 153 



being entire and not interrupted behind ; the basal joints of the 

 flagellum are shorter and stouter. In sagus $ the pubescent patch 

 on posterior coxae covers nearly the entire under surface. In sar/ns % 

 the scape beneath is white, while in promptus it is black. 



48. vagans, Prov. Nat. Can. vii, p. 51, % . 



Hah. — Canada. Slender, black, shining; face, clypeus, mandibles, 

 palpi, orbits, slightly interrupted, annulus on flagellum, scape beneath, 

 margins of prothorax, line beneath wings, tegula?, scutellums, four an- 

 terior coxce and trochanters and legs in front, all white ; posterior tibiae 

 pale, black at tips, tarsi dusky, pale at base of joints ; wings hyaline ; 

 postpetiole flattened, indistinctly sculptured ; gastrocoeli indicated by 

 a rugosity, not deep. Length % .-40 — Ah inch. 



49. vittifrons, Cress. Proc. Ent. Soc. Phil, iii, p. 143, % , 



Hah. — Del., Va., Ga. A beautiful species, of rather large size, 

 shining black, with the orbits, face except a broad black stripe down 

 the middle, spot on each side of clypeus, mandibles, palpi, scape be- 

 neath, tegulaj, a line before and a short one beneath, scutellum more 

 or less, a small spot behind, four anterior coxae beneath, most of their 

 tibiae and tarsi, a line on their femora at tips within, tips of all the 

 femora and a line on the posterior tibiae exteriorly, all white; antennae 

 long, slender at tips, the flagellum entirely black ; wings fuliginous, 

 with a brilliant purplish reflection, sometimes conspicuously hyaline 

 or subhyaline at base ; abdomen slightly tinged with blue, shining, 

 rather closely and uniformly punctured, postpetiole punctured. Length 

 % .70 — .75 inch. 



50. recens, n. sp. 



%. — Slender, black, rathei" shining ; orbits, slightly interrupted at summit of 

 eyes, face except a black spot on middle forming a stripe and extending to tip 

 of clypeus, sides of clypeus, spot on mandibles, palpi, scape beneath, upper 

 margin of prothorax, two short lines on disc of mesothorax, tegulse, short line 

 beneath, scutellum, dot behind, a dot on each side before, spot on four anterior 

 coxse beneath, stripe on their femora, their tibife and tarsi in front, tips of pos- 

 terior femora, a line on entire length of their tibise behind and a stripe on basal 

 joint of their tarsi, all white; wings hyaline, fuliginous on apical margin; abdo- 

 men tinged with purple, closely punctured, especially ut base of segments, post- 

 petiole sparsely punctured, gastrocoeli large and deep. Length .62 inch. 

 n<ih. — West Virginia, (Ridings). 



51. cordatus, Cress. Proc. Ent. Soc. Phil, iii, p. 140, % . 



Hah. — Colorado. A rather slender black species, with the abdomen 

 tinged with purple; the wings subhyaline, darker at tips; anterior 

 orbits (very narrow above the antennae and squarely emarginate on 



TBASS. AMER. E.ST. SOC. VI. (21) JULY, 1877. 



