No. 22.] HYMENOPTERA OF CONNECTICUT. 97 



25. Postocellar area densely punctate throughout 26 



Postocellar area sparsely punctate, except on its occipital 



margin; body black, with clypeus, labrum, mandibles at 

 base, front coxae in great part beneath, middle coxse at 

 apex, hind coxse at apex, and a large spot on outer side, 

 trochanters, front femora at apex beneath, front and mid- 

 dle tibiae beneath, and tarsi except apices of segments and 

 posterior metatarsi, white; upper orbits with a large im- 

 punctate area. Length 8 mm contaminata 



26. Mesopleurae more densely punctate on upper portion than 



lower; body black, with clypeus, labrum, mandibles at base, 

 narrow line on collar and tegulae, front and middle legs 

 beneath except base of coxae, a large spot on side of hind 

 coxae, hind trochanters, and hind tarsi beyond the meta- 

 tarsi, white; upper orbits with a large impunctate area. 



Length 8 mm albomaculata 



Mesopleurae uniformly densely punctate throughout; body 

 black, with tip of labrum, front and middle legs beneath 

 beyond middle of coxae, apices and a large spot on outer 

 side of hind coxae, and hind trochanters, white; front, post- 

 ocellar area, and upper orbits almost uniformly finely 

 punctate minuta 



27. Antennae pale at base or apex 28 



Antennae pale at base and apex ^7 



28. Antennae pale at apex 29 



Antennae pale at base 31 



29. Collar black; body black, with antennae at apex, labrum in 



part, trochanters, front legs beyond middle of femora be- 

 neath, middle legs beyond basal two-thirds beneath, and 

 a large spot on the side of the posterior coxae, white ; head uni- 

 formly densely punctate. Length 10 mm nigra 



Collar broadly white 30 



30. Middle of head between antennal furrows distinctly elevated; 



posterior orbits polished and obsoletely punctate; body black, 

 with apex of antennae, clypeus, labrum, base of mandibles, 

 collar broadly, V-spot, a triangular spot on pleurae, sometimes 

 a mere dot, or wanting, an elongate dot at base of each wing, 

 sometimes wanting, scutellum, front and middle legs (ex- 

 cept femora and tibiae above, a ring at apex of tibiae, and 

 rings at apices of tarsal segments), a spot on side of hind 

 coxae, hind trochanters, hind femora beneath, venter of ab- 

 domen, and dorsal apical margin of segments, enlarged at 

 sides (apical margin sometimes wanting), white. Length 



1 1 mm zonalis 



Middle of head between antennal furrows not decidedly ele- 

 vated; posterior orbits distinctly punctate; body black, 



7 



