ART. 15. REVISIOI^ OF ICHNEUMON-FLIES— MUESEBECK. 29 



8. MICROGASTER BAKERI, new species. 



Very similar to xanthaspk^ from which it differs in the normal 

 second cubital ceil, and the other characters given in the table to 

 species. 



Female. — Length 2.3 mm. Face a little longer than broad, uni- 

 formly closely punctate and opaque, with a rather distinct median 

 longitudinal carina; vertex and temples more weakly punctate and 

 shining; antennae as long as the body; mesoscutum and scutellum 

 uniformly closely sharply punctate and opaque, the latter distinctly 

 convex; mesopleurae smooth and highly polished, except anteriorly, 

 where they are closely punctate and opaque ; propodeum short, rather 

 flat, punctate or very minutely rugulose, with a prominent median 

 carina, opaque; metapleurae almost entirely smooth and highly 

 polished; metacarpus somewhat longer than stigma; radius arising 

 from stigma somewhat beyond middle, perpendicular to the anterior 

 margin of wing, and longer than the first intercubitus ; second inter- 

 cubitus hyaline, but distinct, and joining cubitus with the end of the 

 first abscissa of the radius; posterior coxae more than half as long 

 as the thorax, finely granular and opaque above ; inner spur of middle 

 tibiae a little longer than middle metatarsus ; inner spur of posterior 

 tibiae about three-fourths as long as posterior metatarsus; abdomen 

 very slender, about as long as the thorax ; the first dorsal abdominal 

 plate very narrow, three times as long as its greatest breadth, and 

 narrower at apex than at base, channeled down the middle, and very 

 weakly roughened posteriorly; second abdominal tergite much 

 shorter than the third, transverse, strongly emarginate behind, and 

 provided with two longitudinal furrows medially, which converge 

 slightly behind, the entire tergite smooth and shining like the re- 

 mainder of the abdomen. Black; labrum, mandibles, palpi, pale; 

 antennal scape testaceous; flagellum brownish-black; tegulae and 

 wing-bases pale yellow; wings hyaline, stigma brown, veins pale 

 brown ; fore and middle legs entirely yellow ; posterior coxae black, 

 their trochanters yellow, their femora reddish-testaceous on the basal 

 half, brown to black on the apical half ; posterior tibiae pale yellow 

 with a broad black band at apex ; tarsi dusky except at extreme base 

 of basal segment ; abdomen black, except the first dorsal plate and 

 the membranous margins along the two basal plates, which are red- 

 dish ; venter of abdomen reddish on the basal two-thirds. 



Male. — Like the female in all essential characters. 



Type locality. — Louisiana. 



Type.— Csii. No. 23988, U.S.N.M. 



Described from one female and two male specimens from the C. F. 

 Baker Collection, the female and one of the males from Louisiana,^ 

 the other male from Kansas, 



