1864.] 399 



teguljB yellow. Wings hyaline, glossy, faintly iridescent; uervures and 

 stigma black. Legs yellow, polished; the posterior pair, except their 

 coxae at base beneath, and tips of their femora, fulvo-ferruginous, their 

 tibiai and tarsi paler, the latter dusky at tips; the anterior femora are 

 slightly tinged with ferruginous. Abdomen with the basal segment 

 ferruginous and polished, blackish above at base, and tinged with yel- 

 low on each side and at extreme tip ; remaining segments subopacjue. 

 fuscous above, darker towards the tip, with a bluish iridescence, the 

 apical margins of the segments pale, and the sides more or less yellow ; 

 beneath yellow, tinged with ferruginous; ovipositor longer than the first 

 segment of the abdomen, dull rufous, the valves bright yellow, black 

 at base and tip, more broadly so at base. Length 8 lines ; expanse of 

 wings 10 lines. 



3Iale. — Like the female, except that the antennae are without the 

 black annulus on the apical third, and the abdomen is not so much 

 tinged with yellowish laterally. 



ffab.—^eyv Jersey, (Coll. Ent. Soc. Phil.) New York, (Coll. Mr. 

 James Angus.) Four specimens. 



Mr. Angus has reared both % and 9 of this singular insect from a Rasp- 

 berry stem, together with a small species of Crahro. 



LABENA, nov. gen. 

 Head transverse; face rather prominent, quadrate; eyes large, slight- 

 ly emarginate opposite the insertion of the antennte; ocelli placed in a 

 triangle on the vertex; clypeus subtransverse, depressed, truncate and 

 subcarinate at base, rounded at tip; mandibles moderate and stout, 

 acutely bifid at tip; palpi filiform, moderate. Antcnntx, rather long and 

 tolerably stout, with over 50 joints, the basal joint short and robust, 

 obliquely truncate on the outside, receiving the 2nd and 8rd joints, the 

 last of which is minute; 4th joint nearly as long as the three basal 

 joints together; remaining joints gradually shorter, the incisures dis- 

 tinct and prominent in % , indistinct in 9 • Thorax short and robust; 

 mesothorax ovate, slightly convex; scutellum rather prominent, subor- 

 bicular ; metathorax moderate, convex, with distinct elevated lines. 

 Wliujs long and ample, the neuration resembling that of Grotea, except 

 that the discoidal cell is much shorter, the outer nervure or second re- 



