ERIOPTERA. 163 



running also round the apex. The third posterior cell is some- 

 what longer than the first, nearly of the same length with the 

 second marginal cell. 



Bah. Washington, D. C. 



The description is drawn from a number of female specimens. 

 I possess several male specimens from Pennsylvania, which are 

 somewhat darker in coloring ; the antennae are very long, but 

 little shorter than the body; brown, basal joints yellow; the long 

 cylindrical joints of the flagellum clothed with long hairs ; the 

 sulphur yellow on the front and the humeri is much less striking ; 

 the halteres are slightly brownish and the pubescence of* the 

 anterior margin of the wings has a more brownish tinge. I am 

 uncertain whether these specimens belong to the same species. 



14. E. hirtipeimis 0. S. 9 . — Fusca, griseo-pruinosa, antennis 

 pallide fuscis ; alse immaculatse, pube nigrescente. 



Brown with a grayish bloom, antennae pale brown ; wings immaculate, 

 with a blackish pubescence. Long. corp. 0.2 — 0.25. 



Syn. Erioptera hirtipennis 0. Sacken, Proc. Ac. Nat. Sc. Phil. 1859, p. 228. 



Rostrum and palpi brown ; antennas brownish or blackish ; 

 second joint generally slightly paler ; joints of the flagellum short 

 subcylindrical ; front with a gray bloom and some scattered hairs, 

 which, in a certain light, have a golden-yellow reflection. Thorax 

 dull grayish-brown ; stripes obsolete ; in somewhat immature 

 specimens a very indistinct pale longitudinal line is sometimes 

 perceptible ; humeri with an inconspicuous pale yellow spot ; 

 halteres brownish, their basis pale ; abdomen grayish-brown, with 

 a golden yellow pubescence ; ovipositor ferruginous ; feet black- 

 ish, coxae and basis of the femora paler ; wings immaculate, with 

 a blackish pubescence ; root of the wings pale. 



Hab. Washington, D. C. ; Maryland ; the present description 

 was drawn from four fresh specimens, which I found in Orange, 

 N. J. 



15. E. forcipilla, n. sp. % and 9 . — Fusca, mesonoto pallide fus- 

 cano, antennis fuscis, basi pallidis ; abdomen fuscum, genitalia flavida ; 

 al<e immaculatse, pube fuscana. 



Brown, mesonotum pale brownish, antennse brown, pale at the basis ; ab- 

 domen brown, genitals yellowish ; wings immaculate, with a brownish 

 pubescence. Long. corp. 0.2 — 0.25. 



