ART. 15. REVISION OF ICHNEUMON-FLIES MUESEBECK. 51 



is very long and narrow, parallel-sided, and truncate at apex; and 

 the second plate is short, transverse, and partly aciculate. 



The type is the only specimen of this species that I have seen. 



6. MICROPLITIS KEWLEYI, new species. 



Very similar to confusus, which species it also resembles in the 

 cocoons and the type of host attacked. The adult differs from con- 

 fusus in the first dorsal abdominal plate being distinctly a little 

 broader at apex than at base; in the more weakly punctate and 

 strongly shining mesoscutum and scutellum, and in the dorsum of the 

 abdomen being wholly black. 



Female. — Length 2.5 mm. Face closely minutely punctate, shin- 

 ing medially; clypeus weakly punctate and shining; vertex, temple 

 and cheeks distinctly closely punctate; antennae much shorter than 

 the body ; mesoscutum with numerous irregular punctures, strongly 

 shining; scutellum impunctate, polished on the disk; mesopleurae 

 punctate and shining below and in front of the crenulate furrow, 

 perfectly smooth and highly polished above it; propodeum coarsely 

 rugoso-reticulate, with a prominent median longitudinal carina; 

 metacarpus shorter than stigma ; radius hardly as long as first inter- 

 cubitus ; legs slender ; spurs of posterior tibiae about equal in length, 

 and much less than half as long as metatarsus; abdomen almost as 

 long as thorax ; first dorsal abdominal plate broadening slightly pos- 

 teriorly, distinctly broader at apex than at base, truncate at apex, 

 mostly smooth and shining, having only a few very weak striae at 

 the sides; remainder of dorsum of abdomen very highly polished; 

 ovipositor subexserted ; the hypopygium not surpassing apex of last 

 dorsal segment. Black; labrum brown; antennae often testaceous 

 beneath on the basal two-thirds, brown on the apical third ; tegulae 

 pale; wing-bases darker; wings subhyaline, the veins and stigma 

 light brown, the latter yellowish and transparent on basal third ; legs 

 yellowish-brown ; posterior coxae black ; abdomen piceous black ; the 

 membranous margins along the two basal plates dingy ferruginous. 



MaZe.— Like the female, except for the usual secondary sexual dif- 

 ferences. 



Cocoons.— ?>.^ mm. in length; cylindrical; plain, without longi- 

 tudinal ridges ; pale dirty brownish ; gregarious. 



Type locality.— College Park, Maryland. 



Type.— Cut. No. 23998, U.S.N.M. 



Hosts. — "Cutworms ;" Euxoa, species. 



Described from eighteen female and two male specimens reared 

 from a cutworm by R. J. Kewley, in the Bureau of Entomology, under 

 Cage No. B86G, at College Park, Maryland. In addition to the type 

 series the National Collection contains many specimens, for the most 

 part reared from cutworms, from the following localities: College 



