No. 22.] HYMENOPTERA OF CONNECTICUT. I45 



of apex; body black; front femora and tibiae more or less white 

 in front, suffused with black; wings infuscated. Length 8 mm. 



*H. fumipennis (Norton). Selandria (Phymatocera) fumi- 

 pennis Norton. Howard, Insect Book, PI. xiv, Fig. 13. 



Postocellar area hardly elevated above the posterior orbits ; 

 saw-guides straight above and convex below, rounded to a 

 blunt point at apex above ; body black ; front femora and tibiae 

 more or less white in front, suffused with black ; wings infus- 

 cated. Length 8 mm. Larva feeds on Smilacina racemosa. 



Farmington (E. N.) ; Hamden, 24 July, 1910 (B. H. W.). 



Isodyctium Ashmead 



Key to Species. 



1. Head wholly or in part pale 2 



Head wholly black 3 



2. Body wholly yellow or rufous, with eyes and antennae be- 



yond first segment, black ; wings, including veins and 

 stigma, yellowish hyaline; postocellar area completely cir- 

 cumscribed; saw-guides concave above and below, pro- 

 longed into a narrow truncated projection above at apex. 



Length 6-7 mm dilutum 



Body black, with orbits connected across postocellar area, 

 antennal fovese, first segment of antennas in part, supra- 

 clypeal area in part, clypeus, spot on mandibles, most of 

 prothorax, tegulse, median lobe of mesonotum with its 

 lateral margins, a spot on scutellum, pleurae in part, legs, 

 and abdomen in great part, pale luteous; wings hyaline. 

 Length 6 mm rileyi 



3. Ocellar basin subobsolete; body black, with clypeus, labrum, 



mandibles, tegulse, prothorax, legs, and abdomen beyond 

 basal plates, except a broad fuscous band through the middle 

 of the dorsum, luteous ; pleurae, broad bands on lobes of meso- 

 notum, and scutellum, rufous; saw-guides concave above, 

 convex below, and prolonged above into a marked spine- 

 like projection at apex; wings hyaline. Length 7 mm. . .caryicola 

 Ocellar basin small, but distinct 4 



4. Clypeus scarcely emarginate; body black, with a spot on 



supraclypeal area, clypeus, broad bands on lobes of meso- 

 notum, pleurae, legs, and abdomen, except blackish bands 

 of varying extent on each of the segments, rufous; wings 



hyaline. Length 6.5 mm infrequens 



Clypeus distinctly, angularly emarginate 5 



5. Pleurse in great part black; body black, with clypeus, labrum, 



spot on mandibles, collar narrowly, tegulse, a narrow line 

 10 



