192 [June 



Wings hyaline, faintly fuliginous at apical margins ; nervures fuscous, 

 pale at base, stigma pale brown ; areolet 5-angular, slightly subtrian- 

 gular. Legs pale fulvous ; the coxae except a large black spot on the 

 outside of the posterior pair, whitish ; the trochanters, the four anterior 

 tibiae in front and a band on the posterior tibire near their base, also 

 whitish ; extreme base of the posterior tibisB as well as their apical half 

 exteriorly, blackish. Abdomen elongate, subcylindric, slender at base, 

 pale fulvous, darker towards the apex, shining, finely punctured ; basal 

 segment smooth and polished, black above and beneath, a triangular 

 spot at its tip and its sides whitish ; base of second segment depressed ; 

 beneath colored as above. Length 6 lines ; expanse of wings 9 lines. 

 Hah. — Pennsylvania (C A. Blake) ; Delaware (Dr. Wilson) ; New 

 Jersey (Cresson). 



9. Isch. volens, u. sp. 



Yellowish-rufous ; face, scutellum, two spots on metathorax. and the four 

 anterior coxise, yellowish : base of the 2nd and three following abdominal seg- 

 ments black : wings subhyaline. 



Male. — Yellowish-rufous, shining, covered with a very short pale 

 pubescence ; the face beneath the antenn;\;, clypeus, spot on mandibles, 

 palpi, and the outer orbits indistinctly, yellowish ; the space immedi- 

 ately behind the base of the antennae blackish ; antennae more than 

 half the length of the body, porrect, yellowish-rufous, paler beneath, 

 sometimes the 15th to 21st joints above are yellowish. Thorax dull 

 rufous, sometimes brownish, finely punctured; the collar above, tegulje, 

 a spot before and a line beneath the wings yellowish ; the pleura is 

 stained with blackish along the sutui-es and beneath ; scutellum rather 

 convex, polished, as well as a short transverse line or two spots behind 

 it, the space on each side is black ; metathorax rather feebly punctured, 

 shining, clothed behind with white pubescence, yellowish-rufous, its 

 extreme sides black, and having two large yellowish spots behind, the 

 elevated lines indistinct, the central area moderate, subquadrate, pol- 

 ished. Wings subhyaline, tinged with fuliginous ; nervures fuscous, 

 pale at base, stigma fulvous ; areolet 5-angular or subtriangular. Legs 

 yellowish-rufous ; the four anterior coxae and trochanters yellowish, 

 the posterior tibiae and tarsi obfuscated. Abdomen elongate, subeylin- 

 drical, slender at base, densely and finely punctured ; basal segment 

 smooth and poUshed ; base of the 2nd and three following segments 



