No. 22.] HYMENOPTERA OF CONNECTICUT. 63 



Eyes never margined with white; body in female black, with 

 the following parts white: antennal segments six to nine, 

 clypeus, labrum, a fine line sometimes on collar, scutellum 

 and postscutellum, apices of coxae, and trochanters; with 

 the following parts rufous: tegulas, wings at base, abdomen 

 including basal plates, and legs beyond trochanters except 

 a ring on the apex of posterior femora; third segment 

 of antennae longer than fourth; saw-guides with the upper 

 margin straight, lower margin convex, and squarely trun- 

 cated at apex; normal individuals have head entirely black, 

 except as specified above, but many specimens have more 

 or less rufous on the head, and in some individuals head is 

 almost entirely rufous. Male differs only in having apex 

 of abdomen washed with black. Length 9-11 mm apicalis 



8. Pleurae entirely black; body in female black, with the follow- 



ing parts rufous: clypeus, labrum, three or four basal seg- 

 ments of antennae, collar, tegulae, basal portion of wings, 

 legs, beyond apices of trochanters, and abdomen beyond 

 basal plates; third segment of antennae longer than fourth; 

 saw-guides convex above and below and obliquely rounded 

 to a point at apex above. Male differs in having labrum, 

 clypeus, collar, tegulae, and bases of legs whitish, and apex 

 of the abdomen infuscated with black. Length 9 mm., .epicera 

 Pleurae entirely rufous; body black, with the following parts 

 white: clypeus, labrum, antennal segments one and two, 

 tegulae, scutellum, costa, coxae, and trochanters; with the 

 following parts rufous: prothorax, mesopleurae, metapleurae 

 in part, abdomen, and legs beyond trochanters except a 

 ring on the apex of posterior femora; third segment of 

 antennae as long as fourth and fifth together; saw-guides 

 straight above, convex below, and obliquely roundly trun- 

 cated at apex. Length 9 mm pallipes 



9. Coxae entirely white 10 



Coxae entirely black except sometimes at apex; antennae with 



second segment distinctly longer than broad; body black, 

 with the following parts rufous : labrum, tegulae, base of 

 wings, legs beyond coxae except posterior tarsi, and abdom- 

 inal segments two to five; third segment of antennae longer 

 than fourth; mesopleurae densely, finely punctate; saw- 

 guides with the upper and lower margins parallel and 



roundly truncated at apex. Length 10 mm rufocincta 



10. Scutellum black; body black, with the following parts white: 

 clypeus, labrum, a fine Hne on collar, tegulae, coxae, tro- 

 chanters, costa, and base of stigma; with the following 

 parts rufous: legs beyond trochanters except a ring on the 

 apex of posterior femora and posterior tarsi, and abdominal 

 segments two, three, and four; third segment of antennae 



