NO. -'Oit.-.. THE BRACONID SUBFAMILY OPIINAE—GAHAN. 75 



OPIUS FERRUGINEUS, new species. 



Female. — Length 2 mm. Antenna longer than the body, 34- 

 jointed in the type, the first joint of the flagellum about equal to the 

 scape, joints toward the apex only a little longer than wide; head 

 transverse; eyes elliptical, very slightly narrowed ventrally, wider 

 than the posterior orbits; vertex and frons polished, very sparsely 

 hairy; face below antennae hairy, with sparse obscure punctures and 

 a distinct median ridge from the antennal line to the clji^eus ; clypeus 

 short, transverse, its anterior margui somewhat concave, leaving a 

 wide opening between it and the mandibles. Thorax smooth, 

 sparsely hairy, the hairs thickest on the propodeum and mesosternum; 

 mesoscutum trilobed, the parapsidal grooves obsolete on the posterior 

 half, a deep dimple-like fovea medially just in front of the scutellum; 

 scutellum smooth; mesopleurae with a crenulate impression; pro- 

 podeum rugose. Stigma of ihe forewing broad and triangular, the 

 radius arising from about the middle; first radial abscissa about one- 

 third as long as the stigma is wide; second abscissa very slightly 

 longer than the first transverse cubitus ; radial cell short, terminating 

 above the extreme wing-apex a distance about equal to the combined 

 first and second abscissae of radius; second cubital cell narrowed 

 outwardly; recurrent nervure joining the second cubital cell close 

 to the basal nervure. Abdomen ovate, not longer than the thorax, 

 its first tergite slightly longer than broad, with sublateral carinae 

 from base to apex, the posterior half of the tergite between the 

 carinae rugulose; segments beyond the first smooth; ovipositor 

 exserted about one and one-half times the length of the abdomen. 

 Eyes, spot enclosed by the ocelli, and the flagellum black; scape and 

 pedicel brown; posterior tibiae except basally, all of the posterior 

 tarsi and the terminal joint of the median and anterior tarsi brownish; 

 wing veins and stigma yellowish-brown ; ovipositor sheaths blackish ; 

 remainder of the body stramineous. 



Male. — Antemiae thirty-nine jointed in the type; abdomen brown- 

 ish on the dorsum and not so broad as in the female; otherwise 

 essentially Uke the female. 



Type.— C&t. No. 19357, U.S.N.M. 



Described from a female and a male in the United States National 

 Museum, bearing the number 18814, which is an accession number of 

 the Illinois State Laboratory of Natural History. Mi*. C. A. Hart, of 

 the latter institution, kindly furnished the following information from 

 their records: "Taken in sweepings along the shores of Lake Geneva, 

 in Wisconsin, August 31, 1892." 



