NO. 2197. NEW PARASITIC HYMENOPTERA—GAHAN. 203 



from the base of the clypeus about halfway to the antennae and 

 setting off a broad, low, rounded median ridge on the lower part of 

 the face, the depressed areas very faintly sculptured; clypeus with 

 sparse distinct ininctures, narrow, strongly arched anteriorly and 

 forming with the mandibles a broad, elliptical opening; posterior 

 orbits rounded and equal to about half the width of the eye ; occiput 

 with a distinct carina laterally which is effaced behind the vertex; 

 antennae inserted above the middle of the eye, 31-jointed in the 

 type, the first flagellar joint about three times as long as thick, the 

 second slightly shorter; mesoscutum and scutellum shining with very 

 faint coriaceus sculpture, the notauli absent except for a short deep 

 fovea at the lateral anterior angles of the mesoscutum; mesopleura 

 smooth except that the impression below the middle is broad and 

 strongly rugoso-punctate ; entire propodeum coarsely rugose; radial 

 cell extending nearly to the extreme apex of wing: first radial ab- 

 scissa scarcely longer than thick, second abscissa about one and 

 one-half times the length of the first intercubitus. second cubital cell 

 narrowed outwardly, recurrent nervure interstitial; abdomen about 

 equal to the thorax in length, broadly ovate, the first tergite nearly 

 one and one-half times as long as broad, its sides nearly parallel, de- 

 pressed at base, the apical middle broadly elevated and granularly 

 rugulose: tergites beyond the first smooth and polished; ovipositor 

 concealed from above. Scape, pedicel, two or three basal joints of 

 the flagellum, mandibles except at apex, palpi, tegulae, legs includ- 

 ing all coxae, and the abdomen except at apex bright reddish testa- 

 ceous ; apex of abdomen more or less blackish ; face piceus ; remainder 

 of the body black; wings hyaline, the stigma and veins brownish. 



Male. — Differs in no respect from the female. 



Type-locality. — Brownsville, Texas. 



Type.—C2±. No. 20380, U.S.N.M. 



Host. — A gromyza parvicornis. 



Eighteen specimens reared by C. L. Scott from puparia of the 

 above-mentioned Agromj^zid and recorded in the Bureau of En- 

 tomology under Webster No. 6486. 



NEOPIUS, new genus. 



Occiput completely margined; body with distinct coriaceus sculp- 

 ture. Other characters as in Opius. In the writer's revision of the 

 North American Opiinae^ would run to the genus Ademon on the 

 margined occiput but may be distinguished from that genus by the 

 completely closed radial cell and the absence of any prepectal carina. 

 In Ademon the radius is effaced before attaining the wing martrin 

 and the prepectal area is set off by a sharp carina. 



Type of the genus. — Neopius carinaticeps., new species. 



J Proc. U. S. Nat. Mu&., vol. 49. 1915. p. 66. 



