*4 [January 



opaque, dull honey-yellow, the dorsal lines distant and well impressed ; 

 pectus and pleura polished ; scutellum elongate-triangular, pointed in 

 front, the space on each side sloping, polished ; metathorax opaque, 

 with several subobsolete longitudinal elevated lines, the central one of 

 which is the most distinct, posterior margin produced into a stout sub- 

 acute tubercle on each side of the insertion of the abdomen. Wings 

 ample, pale yellowish hyaline, the apical margins broadly pale fuscous, 

 posterior pair somewhat iridescent; nervures and stigma yellow. Legs 

 rather long and slender, color of the body, except the apical half of the 

 posterior tibia? and their tarsi entirely, which are black. Abdomen as 

 long as the head and thorax, flat, opaque yellowish, shining towards the 

 apex; lateral margins of the two basal segments slightly carinated, and 

 also a longitudinal carina down their middle and continued slightly on 

 the base of the third segment; apical middle of the first segment with 

 a small, very obtuse, polished elevation; apical segments slightly tinged 

 with honey-yellow. Length 5 lines; expanse of wings 10 A lines. 



Collection. — Ent. Soc. Philad. Two specimens. 



One of the specimens before me is much duller in color, being a uni- 

 form dull yellowish-brown, and the apex of the wings scarcely dusky; 

 otherwise I see no difference, and therefore I consider it as a variety. 



Genus MEGISCHUS, Brulle. 

 Megischus brunneus, n. sp. 



Dark brown: knees yellowish ; wings subhyaline; first abdominal segment 

 transversely striated: ovipositor brown, valves blue-black. 



Female — Dark chesnut-brown, shining; head coarsely rugose, the 

 vertex transversely and deeply striated, having anteriorly five short, 

 acute tubercles, arranged thus: 2, 2, 1, the latter or foremost one 

 being the largest, and the posterior pair the smallest; cheeks shining, 

 sparsely punctured ; antennas rather more than half the length of the 

 body, fine, thread-like, blackish, the basal joints brown. Thorax coarsely 

 and confluently punctured, the apex of the metathorax transversely ru- 

 gose. Wings subhyaline, slightly tinged with fuscous; nervures and 

 stigma blackish, the latter with a pale spot at base. Legs brown, the 

 knees yellowish, the posterior femora and tibia} tinged with blackish 

 exteriorly; posterior femora with two stout spines or teeth beneath, the 

 anterior one largest, between these two teeth are two smaller ones, and 

 behind the last tooth there are four minute serratures; posterior tibiae 

 with their apical two-thirds much swollen, their basal third rather slen- 

 der and compressed; posterior pair 3-jointed, the basal joint robust and 

 much dilated ; all the tarsi beneath with a dense pale yellowish pube- 



