1865.] 89 



Division. — Flexiliventres. 

 Genus TRIOXYS, Haliday. 

 Trioxys fuscatus, n. sp. 



Fuscous ; face, tegulse, thorax beneath, and the legs, pale testaceous ; wing? 

 hyaline. 



Fuscous, smooth and polished; face, clypeus, mouth and cheeks, pale 

 testaceous; head large, broader than the thorax, vertex convex, eyes 

 round and rather prominent; antenna; 13-jointed, nearly as long as the 

 body, pale testaceous. Thorax smooth and convex above; a deep trans- 

 verse excavation in front of the scutellum, which is convex ; metatho- 

 rax smooth, rather convex and pale testaceous posteriorly ; the pleura 

 is sometimes testaceous, as well as the tegulas. Wings hyaline, iride- 

 scent, slightly pubescent; nervures pale, stigma large, triangular; the 

 radial and cubital cells imperfect, a complete long, sublanceolate basal 

 costal cell. Legs long and slender, especially the posterior pair, and 

 including their coxae, pale testaceous, the posterior pair sometimes 

 tinged with dusky. Abdomen elongate, slender at base and gradually 

 broader and subcompressed towards the tip, which is more or less tinged 

 with dusky, while the base is pale testaceous. Length f line; expanse 

 of wings 1 \ line. 



Collection. — Ent. Soc. Philad. Four specimens. 



Genus APHIDIUS, Nees. 

 Aphidius fuscoventris, n. sp. 



Black, polished; tegulse and legs pale; abdomen, except first segment, pale 

 fuscous; wings hyaline, iridescent; basal segment of abdomen striated. 



Black, polished ; head transverse ; clypeus and mandibles honey-yel- 

 low; palpi whitish; antennas longer than the body, slender, black, pu- 

 bescent, the two basal joints honey-yellow; mesothorax without dorsal 

 impressed lines, but on each side of the anterior margin there is a rather 

 deep excavation, the lateral margins are slightly grooved, and on the 

 disk posteriorly, just in front of the scutellum, there is a deep fovea; 

 pleura slightly pubescent; scutellum smooth and polished, with a deep 

 transverse excavation in front; metathorax rugose; tegulae whitish. 

 Wings ample, hyaline, iridescent ; nervures and stigma fuscous ; pos- 

 terior wings with a fringe of pale hairs behind towards the base. Legs, 

 including the coxse, pale honey-yellow ; the tarsi and most of the pos- 

 terior tibiae fuscous. Abdomen short, ovate, polished; basal segment 

 black ; longitudinally striated ; remaining segments pale fuscous, mar- 

 gined behind with dark fuscous. Length 1 line ; expanse of wings 3 

 lines. 



Collection. — Dr. J. Gundlach. One specimen. 



