1864.] 185 



75. Ich. soror, n. sp. 



Yellnwish-rufous ; autennfe with a white annulus; scutellura, the four ante- 

 rior coxte and a spot on apical segment of abdomen yellowish; wings clear ; 

 central area of metathorax moderate, subrotundate. 



Female. — Yellowish-rufous, shining ; antennae short, blackish, the 

 9th to 15th joints white, basal joint beneath rutbus. Thorax above 

 slightly tinged with fuscous; tegulae and a short line beneath the wings, 

 surrounded by a blackish spot, yellowish ; scutellum flat, polished, yel- 

 lowish, with a subobsolete pale spot behind, space on each side black- 

 ish ; metathorax finely punctured, the elevated lines not well defined, 

 the central area moderate, subrotundate, polished. Wings hyaline, 

 very faintly fuliginous, iridescent; nervures and stigma fuscous, the 

 latter pale at base ; areolet 5-angular or subtriangular, the 2nd recur- 

 rent nervure sinuate. Legs pale rufous, the four anterior coxae yellow, 

 the tips of the posterior femora and tibiae, and their tarsi, blackish. 

 Abdomen robust, subovate, shining; basal segment rather broad, bilin- 

 eated, polished ; 2nd and 3rd segments finely punctured, apical seg- 

 ments polished ; last segment above yellow ; beneath tinged with yel- 

 low; ovipositor not exserted. Length 3 lines ; expanse of wings 5 lines. 



//;,A._Delaware. Dr. T. B. Wilson. 



76. Ich. velox, n. sp. 



Reddish-brown : antennee with a broad white annulus : thorax beneath 

 blackish: wings hyaline: central area of metathorax large, quadrate; apical 

 segment of abdomen with a yellow sjDot. 



Female. — Reddish-brown ; clypeus and occiput blackish ; antennae 

 about half the length of the body, black, tip slightly involute, the 9th 

 to 16th joints white. Thorax black ; mesothorax above brown, as well 

 as the tegulse, a spot beneath the wings, the scutellum and the anterior 

 margin of the metathorax; scutellum flat, punctured, shining; meta- 

 thorax finely punctured, the elevated lines well defined, the central 

 area large, quadrate. Wings long, ample, hyaline ; nervures fuscous, 

 stigma paler; areolet 5-angular or subtriangular. Legs reddish-brown, 

 the intermediate and posterior femora in part black, the latter almost 

 entirely so. xVbdomen elongate-ovate, reddish-brown, subopaque, shin- 

 ing at tip ; basal foveee of the second segment transverse ; apical seg- 

 ment with a large yellow spot above ; beneath brownish. Length 5 

 lines ; expanse of wings 9 lines. 



Hab. — Illinois. Dr. Samuel Lewis. 



