64 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.61. 



deeply punctate and opaque ; parapsidal grooves wanting ; scutellum 

 apparently about as broad at base as long down the middle and de- 

 cidedly convex; mesopleurae closely punctate and dull anteriorly 

 and below the broad, coarsely crenulate longitudinal furrow, mostly 

 smooth and highly polished above it ; propodeum coarsely reticulate, 

 with a prominent median longitudinal carina; stigma about as long 

 as metacarpus, and very broad; radius perpendicular to ante- 

 rior margin of the stigma, and much longer than the first inter- 

 cubitus; posterior coxae smooth; their femora stout; spurs of poste- 

 rior tibiae nearly equal in length, and about one-third as long as the 

 metatarsus; abdomen a little shorter than the thorax; first dorsal 

 abdominal plate long, broadest at base, narrowing very strongly to- 

 ward apex, where is is hardly half as broad as at base, mostly finely 

 rugulose and opaque ; second plate well defined, triangular, as broad 

 at base as first plate is broad at apex, twice as long down the middle 

 and four times as broad at apex as broad at base, very weakly striate 

 posteriorly in the middle, and somewhat embossed medially; the 

 following tergites smooth and polished; hypopygium extending a 

 little beyond the apex of the last dorsal abdominal segment ; ovi- 

 positor sheaths projecting slightly. Black; face entirely black; 

 mandibles honey-yellow, except at tips; palpi pale stramineous; 

 scape and pedicel of antennae mostly testaceous, the flagellum brown- 

 ish-black; tegulae and wing bases yellow; wings hyaline; the veins 

 and the stigma entirely dark brown; legs honey-yellow, except the 

 posterior coxae, which are dark reddish-brown on the basal two- 

 thirds, and the posterior tibiae and tarsi, which are practically en- 

 tirely fuscous ; dorsum of the abdomen black, except the broad mem- 

 branous margins along the two basal plates, which are very pale 

 yellow ; venter of abdomen pale on the basal half, black beyond. 



Cocoon. — 4 mm. in length ; cylindrical ; bright reddish-brown ; not 

 ribbed ; provided with a very little loose silk ; apparently solitary. 



Type locality. — Hagerstown, Maryland. 



Type.—Q^i. No. 24007, U.S.N.M. 



Host. — " Lepidopterous larva." 



Described from a single specimen reared by W. E. Pennington, at 

 Hagerstown, Maryland. 



25. MICROPLITIS STRIATUS, new species. 



Distinguished at once from nearly all species of this genus by the 

 absence of the longitudinal mesopleural furrow. 



il/rtZe.— Length, 2.2 mm. Face, vertex, and temples closely sharply 

 punctate and opaque : antennae missing beyond the eleventh segment, 

 but apparently of normal length; mesoscutum and scutellum very 

 coarsely confluently punctate and dull; the scutellum convex; meso- 

 pleurae closely coarsely punctate anteriorly and below the non-crenu- 



