38 PROCEEDINGS OF THE NATIONAL, MUSEUM. vol.63. 



ing, shagreened, strongly transversely striate below; pedicel two and 

 one-half times as long as wide, as long as joint four, a little longer 

 and wider than three; four as wide as two, obliquely excised at apex, 

 narrower than five; five to nine transverse, each sharply produced 

 below at apex; ten a little shorter than three, not much longer than 

 wide, broadly rounded apically; thorax more than one and one-half 

 times as long as wide, convex above, higher than wide, the tegulae 

 situated one-third down from the dorsal surface; pronotum sha- 

 greened; notauli nearly complete, well indicated to anterior fourth 

 of mesonotum, converging posteriorly; mesonotum shagreened, the 

 lateral lobes exteriorly polished, pubescent at their apices; scutellum 

 transverse, highly convex, shagreened, sparsely pubescent, with an 

 indistinct longitudinal furrow dorsally; abdomen broadly elhptical, 

 wider and a little longer than the thorax, somewhat less than one 

 and one-half times as long as wide ; first tergite twice as wide as long, 

 polished, the median area quadrate, unsculptured, sharply defined 

 laterally; second tergite about as wide as long; basal foveae deep 

 and broad, oblique, polished, but with numerous striae radiating 

 from them to a little beyond the middle of the segment; median area 

 strongl}'^ striate to the apex of the fovea, with a central carina; ter- 

 gites three to six polished, united less than one-third as long as the 

 second; six broadly transverse, subacute apically; wings hyaline, 

 extending one-half the length of the second tergite past the apex of 

 the abdomen. Black; tegulae, coxae, and first abdominal segment 

 reddish-brown; last six antennal joints fuscous; rest of antenna, 

 and legs, straw colored, the hind legs brownish. 



Male. — Length 2.30 mm. Pedicel three times as long as wide, 

 longer and a little narrower than joint four, twice as long as three; 

 three longer than wide, as wide as four; four more than twice as long 

 as wide, curved, cylindrical, with a sharp knife-like edge below; five 

 as long as six, narrov/er; joints six to nine a little longer than wide, 

 rounded apically; ten longer, subacute apically; abdomen ovate, a 

 little longer than the thorax, two-thirds as wide as long; first tergite 

 as in the female; second not at all striate, otherwise as in female; ter- 

 gites three to seven polished, united one-third as long as the second; 

 wings extending nearly the length of the second segment past the 

 apex of the abdomen. 



Type locality. — Washington, District of Columbia. 



Other localities. — Jacksonville, Florida, and St. Louis, Missouri. 



Type.—Csit. No. 2303, U.S.N.M. Type female and allotype male 

 selected from specimens from Washington, District of Columbia. 



Redescribed from the type series, 10 females and 3 males, in 

 the National Museum in Washington. These specimens were reared, 

 May 8, 1884, from Cecidomyid galls on hickory trees. There are also 

 in the collection numerous para types from Jacksonville. 



