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 coxae at 

 apex, hind coxae 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 



2(i. 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 37 



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 



