No. 22.] HYMENOPTERA OF CONNECTICUT. I23 



with clypeus, oral region, and beneath the eyes, whitish; 

 joints of legs, more or less of anterior face of tibiae and 

 apices of femora, and angles of pronotum, yellowish. 



Length 5 mm cooki 



Legs reddish except apical half of posterior tibiae; clypeus 

 broadly emarginate; ocellar basin distinctly defined but 

 not deeply excavated; frontal crest not strongly developed; 

 median fovea triangular; procidentia short, more than 

 twice as broad as long, truncate; body entirely black except 

 parts named. Length 9 »mm rufipes 



8. Frontal crest strongly raised and unbroken; clypeus broadly 



and shallowly emarginate; ocellar basin with distinctly 

 defined but not prominent walls; median fovea shallow, 

 elongate oval ; saw-guides pointed, with a distinct scopa 

 near the tip; body in female dull black, with face below an- 

 tenna, orbits, pronotum, tegulse, pectus broadly, venter of abdo- 

 men, lateral edge of dorsum, and some of the margins of the 

 basal segments of the abdomen, pallid ; legs in part slightly 

 infuscated; male differs in having dorsum of abdomen black 



and venter somewhat infuscated. Length 5.5 mm azalese 



Frontal crest broken (See sec. 5) similis 



9. Abdomen black on dorsum; ocellar basin with side walls indis- 



tinct or wanting; frontal crest short, strongly raised, and 

 scarcely broken; median fovea small, shallow, circular; 

 saw-guides very broad, obliquely truncate, upper edge ob- 

 tusely pointed; body luteous or reddish, with a spot on 

 vertex extending to antennas, lobes of mesonotum at cen- 

 ter, scutellum in part, metanotum, abdomen on dorsum, saw- 

 guides, and lower half of pleurae, black. Length 6 mm fulvipes 



Abdomen yellow 10 



10. Wings smoky; legs black; frontal crest and sides of ocellar 

 basin indistinct; median fovea elongate, shallow; saw- 

 guides elGngate, obtusely rounded at apex; body yellowish 

 ferruginous, with the head and thorax in great part, center of 

 the basal plates, apex of the abdomen, saw-guides, and legs, 

 black. Length 8.5 mm luteotergum. 



Wings hyaline or nearly so ; legs pale il 



3 1. Femora wholly or in part black; ocellar basin with indistinct 

 walls; frontal crest large, sharply defined, slightly or not 

 at all broken; median fovea triangular; saw-guides long, 

 narrow, regularly and equally rounded on both margins 

 to obtuse apex; body ferruginous or reddish, with anten- 

 nae above, a line on anterior lobes of mesonotum, sometimes 

 wanting, apex of scutellum, metanotum in great part, and 

 abdomen dorsally at center, bJack. Length 7.5 mm. . .lineatus 



Femora resinous or yellow 12 



