No. 22.] HYMENOPTERA OF CONNECTICUT. 85 



Anterior femoral pocket black; body black, with clypeus, labrum, 

 mandibles at base, antennae at apex, collar, scutellum, front 

 legs beneath beyond the middle of the femora, middle tarsi, a 

 spot on sides of basal plates, apex of basal plates, some- 

 times broadly, rarely a spot above posterior coxae, white; 

 wings infuscated at apex. Length 12 mm antennata 



13. Abdomen black at base and apex, rufous in middle; body 



black, with apex of antennae, a white spot above posterior 

 coxse, a spot on pleurae, sides of basal plates, anterior and 

 middle coxae and trochanters in part, tegulae, base of costa, 

 legs except the parts named and the bases of the coxae, a line 

 on the femora above, a spot at apex of the tibiae above, pos- 

 terior tarsi for the greater part, and abdominal segments three 



to six, rufous. Length 10 mm semicornis 



Abdomen yellow; body black, with clypeus, labrum, mandi- 

 bles at base, cheeks, orbits, two spots on postocellar area, 

 apex of antennae, collar and tegulae, scutellum, two spots 

 on pleurae, and apices of coxae, a spot on side of posterior 

 coxae, and trochanters, yellow; legs, except apex of pos- 

 terior femora, rufous. Length 11 mm jocosa 



14. Vertex impunctate, polished 15 



Vertex finely, distinctly punctate 17 



15. Head with orbits wholly black; body black, with clypeus, 



labrum, mandibles at base, cheeks broadly, collar, tegulae, 

 oblique spot at middle and edge of posterior margin of 

 mesopleurae, spot above posterior coxae, coxae except above, 

 and margin and sides of basal plate, white; legs (except a 

 line above on front and middle femora, hind coxae, apex of 

 femora above, apex of tibiae and tarsi), and abdomen, rufous; 

 in some specimens the antennae may be entirely black or rufous 

 beneath at the apex, or the apex of the abdomen black, or 



the pleurae almost wholly black. Length 13 mm signata 



Head with orbits in great part yellow 16 



16. Appendage of scutellum transversely striate, with numerous 



large punctures; body black, with clypeus, labrum, mandi- 

 i bles at base, cheeks, orbits, interrupted opposite base of 

 antennae and at top of head, collar, tegulae, vittas on meso- 

 notum, metanotum in part, spot above posterior coxae, 

 and spot on side of basal plates, yellow; legs beyond coxae, 

 except basal half of middle and hind femora above, two 

 basal segments of antennae, and abdomen beyond third 



segment, rufous. Length 13 mm bilineata 



Appendage of scutellum not striate, with few punctures or 

 none; body in female black, with clypeus, labrum, mandibles, 

 supraclypeal area, orbits in great part, collar, tegulae, vittae 

 on mesonotum, sometimes wanting, scutellum, postscutel- 



