AMERICAN HYMENOPTERA. 251 



clouded at base of upper pair; marginal cross nervure straight, re- 

 ceived between the middle and apex of cell ; a faint dot in middle of 

 first brachial as well as in the second submarginal cell. 



S . Resembles female^ except the tegulas and edge of collar are 

 whitish. 



Farmington, Conn., Canada, Illinois. (41 9 ; 2 S ). 



Taken in June fur several years, on the Linden (^Tilia aniericana^. 

 Larvae not known, but I have often noticed the leaves eaten with ir- 

 regular holes, as in the case of *S'. i-uhi. Doubtless, like it^ they feed 

 iu the night or early morning only. 



Sub-Tribe B. (Phi/matocera), Dalilb. 

 Antennas bristle-shaped, long. 



12. S. rudis. 



Selandria rudis, Norton, Bost. Proc. viii, 221, 7, 9- 

 Black; thorax mostly rufous. Length 0.20. Br. wings 0.44 inch. 



9 . Body short. Antennae longer than to base of thorax, slender, 

 ends of joints not enlarged, third joint hardly longer than fourth; the 

 first and second joints, nasus and labrum pale rufous; head apparently 

 striate and finely and sparsely punctured; a wide channel on each side 

 of ocelli from summit to mouth, and a shallow shield-like basin below 

 ocelli; edge of nasus straight; tegulre, prothorax, mesothorax and the 

 anterior half of pleura orange-red; legs black, tips of the femora, the 

 anterior tibije beneath, and the tips of tarsi pale rufous; tibias and tar- 

 si fuscous, pilose; claws with no perceptible inner tooth. Wings hya- 

 line; marginal cross nervure curved, and received at junction of third 

 and fourth submarginal, second submarginal but little longer than first; 

 third cell nearly twice as long. 



% . The male has more of white upon the four anterior legs. 



Maine, Conn., N. Y. 



In one specimen the marginal nei'vure is received within the third 

 submarginal cell. 



13. S. rufula. 



Selandria rufula, Norton, Bost. Proc. viii, 1861, 221, 8, % . 

 Black ; tegulge and edge of collar reddish-yellow. Length 0.18. Br. wings 

 0.40 inch. 



%, . Not very stout. Antenna; nearly as long as body, second joint 

 half as long as first, third joint compressed, third, fourth and fifth 

 equal length, remainder nearly as long, apical joint as long as preceding; 

 head polished, nasus slightly incurved, and with the labrum, tegulge, 

 and edge of collar dull honey-yellow; legs black, tips of the four ante- 

 rior femora and their tibiie whitish; wings hyaline; marginal nervure 



