No. 22.] HYMENOPTERA OF CONNECTICUT. 155 



Median fovea flat, without a papilla at center, somewhat X- 

 shaped; hind wings with cell R1+2 angulated at apex below, 

 with a spur; body black, with tegulae and legs below 

 knees, except apices of tibiae and greater part of tarsi, 

 white; saw-guides strongly convex above and below and 

 rounded to a point at apex. Length 6 mm aperta 



6. Scutellum punctate at sides 7 



Scutellum finely striate at sides; body black, with tegulae 



and legs below knees, except apices of tibiae and tarsi, 

 white; median fovea an elongate furrow; saw-guides broad, 

 straight above, convex below, obliquely truncated at apex. 

 Length 6 mm angulata 



7. Median fovea with a large rounded papilla at center; body 



black, with tegulae, and legs, except tips of middle and pos- 

 terior tibiae and tarsi, white; hind wings with cell R1+2 

 angular below at apex, without a spur; saw-guides straight 

 above, and convexly obliquely rounded from base to apex 



below. Length 6 mm adusta 



Median fovea flat, without a papilla at center; body black, 

 with tegulae and legs below knees luteous; hind wings with 

 cell Ri+2 rounded at apex, without a spur; saw-guides broad, 

 straight above and below, broadly convexly and somewhat 

 obliquely rounded at apex. Length 6 mm acuminata 



°B. carbonaria (Cresson). Selandria carhonaria Cresson. 

 °B. spiraeas Dyar. Larva feeds on Spircea salicifolia. 



B. abnorma MacGillivray. 

 °B. antennata MacGillivray. 



B. aperta MacGillivray. 



B. angulata MacGillivray. 



B. adusta MacGillivray. 



B. acuminata MacGillivray. 



Erythraspides Ashmead. 



Key to Species. 



I. Mesonotum rufous 2 



Mesonotum shining black; body black, with apices of coxae, 

 trochanters, and legs beyond knees, white; posterior tibiae 

 infuscated; pentagonal area and V-shaped furrow wanting; 

 . front without lateral foveae; saw-guides straight above and 

 below, broadly convexly rounded to a blunt apex; wings in 

 female infuscated; male with wings clearer at apex. 

 Length 5.5 mm parvus 



