No. 22.] HYMENOPTERA OF CONNECTICUT. 93 



2. Scutellum white or yellow 3 



Scutellum wholly black , 10 



3. Mesopleurae wholly black 4 



Mesopleurse with a white or yellow spot 7 



4. Abdomen in part rufous or brownish 5 



Abdomen wholly black 6 



5. Abdomen dorsally and ventrally with segments two, three, 



and four brownish; body black, with front and middle 

 legs, tegulae, and base of wings, brownish; collar, scutellum, 

 a large spot on side of posterior coxae, their apices, basal third 

 of posterior femora, and tarsi beyond basal three-fourths of 



first segment, white; wings hyaline. Length 8 mm nidonea 



Abdomen rufous beyond basal plates; body black, with 

 clypeus, labrum, mandibles at base, collar, tegulae, scutel- 

 lum, front legs except coxae in part above and tibiae at apex 

 beneath, middle legs except a ring on apex of tibiae, poste- 

 rior legs (except basal half of coxae, apical two-thirds of 

 femora and a ring at their base, apical third of tibiae, and 

 basal half of metatarsus), white; mesopleurae uniformly 

 densely punctate. Length 8 mm omata 



6. Middle legs beyond coxae in part black; body black, with 



clypeus, labrum, collar, two spots on postocellar area, teg- 

 ulae, scutellum, front coxae at apex, front femora and tibiae 

 beneath, front tarsal segments at base, middle coxae at 

 apex, middle trochanters, middle femora at extreme base 

 and apex, middle tibiae except at apex, middle tarsi except at 

 apex, a spot on side and apex of hind coxae, hind trochan- 

 ters, middle of hind tibiae, hind metatarsi except extreme 

 base and apex, hind tarsi at apex, and basal plates at mid- 

 dle, white; veins black; wings smoky; head closely punc- 

 tate, with an impunctate area on each upper orbit. Length 



9-10 mm epinota 



Middle legs beyond apices of coxae wholly yellow; body 

 black, with clypeus, labrum, collar, tegulae, scutellum, front 

 and middle legs beyond apices of coxae, apices of hind 

 coxae, hind trochanters, basal half of hind femora, hind 

 tibiae except apical third, hind tarsi, and basal plates, yel- 

 low; stigma and veins brownish; head densely, finely 

 punctate, with minute impunctate areas on the upper orbits. 

 Length 8 mm texana 



7. Abdomen rufous beyond first segment; body black, with 



clypeus, labrum, collar, tegulae, scutellum, oblique spot on 

 pleurae, front and middle legs, hind coxae and hind trochan- 

 ters, basal half of hind femora, band on middle of hind 

 tibiae, and hind tarsi except apex of apical segment, yellow 



or white. Length 8-9 mm trosula 



Abdomen wholly black 8 



