512 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.48. 



veins blackish except spot at base of stigma and costa, which are 

 brownish-yellow; wing base yellow, areolet subtri angular and petio- 

 late; abdomen black above with the terminal tergites largely 

 brownish-yellow and a broad band of the same color on each of the 

 first two intersegmental sutures and tergites 3-5 narrowly tipped with 

 this color; sternites blackish except for narrow brownish-yellow 

 margins; hypopygium prominent and broadly yellowish at apex; 

 abdomen clothed throughout like thorax; first tergite elevated in the 

 middle with two parallel longitudinal carinae reaching nearly to the 

 apex and inclosing a deep furrow, another furrow on each side 

 extending from spiracle to apex, a deep fovea below each spiracle, 

 irregularly transversely rugulose on sides of petiole and in the furrow, 

 coarsely and densely punctured apically and laterally beyond spira- 

 cles; second tergite coarsely, densely punctured with the carinae 

 extending hardly halfway to the apex; remaining tergites, except 

 base of third, which is rather densely punctate, smooth with fine, 

 sparse punctures; ovipositor directed upward, pale brown, sheath 

 yellowish. 



Type.— Cat. No. 18355, U.S.N.M. 



Type locality. — Vienna, Virginia. 



Described from a single female taken by the writer November 2, 

 1913. 



Genus IDECHTHIS (Foerster) Ashmead. 



IDECHTHIS NIGRICOXALIS, new species. 



Female. — Length, 10 mm. Kelated to erythropus Ashmead, from 

 which it differs as follows: Scape and pedicel beneath and mandibles 

 dark testaceous instead of pale yellow; pronotum laterally shining 

 with strong longitudinal rugae (opaque in erythropus) ; tegulae dark 

 testaceous rather than whitish; all coxae and hind legs throughout 

 black, front and middle femora and trochanters and middle tibiae 

 infuse ated; basal lateral areas of propodeum with a few large punc- 

 tures, petiolar areas more strongly transversely rugose. 



Male. — Length, 8 mm. Differs from female principally in having 

 the posterior legs beyond the coxae dark testaceous, in largely lacking 

 the infuscation on the front and middle legs, and in lacking the punc- 

 tures on the basal lateral areas of the propodeum. 



Type.— Cat. No. 18354, U.S.N.M. 



Type-locality. — Youngstown, New York. 



Host. — Euzopliera semifuneralis. 



Described from two females and two males as follows: The type 

 female bears the further data Quaintance No. 574, 7.31 .05, F. Johnson, 

 collector; and the allotype Quaintance No. 7966, Vienna, Virginia, 

 VII. 11. 13, reared by R. A. Cushman (host unknown); a female 

 (paratype B) which agrees with the allotype in the color of the legs 



