142 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 56. 



protuberant between the antennal sockets, the rims of the latter 

 flush with the surface of the face. Antennal scape luiear with the 

 lower margin slightly expanded as a narrow rim on tlie apical half, 

 forming a slight groove on the exterior surface for the reception of 

 the pedicel: the latter nearly as long as the iirst two funicie joints 

 combined; funicie joints decreasing slightly in length distad, the 

 first about one-half longer than thick, rarely but little longer than 

 thick, the sixth as thick as long; club slightly longer than the last three 

 funicie joints combined, hardly thicker and obliquely truncate 

 beneath. Thorax, abdomen, and legs as described under the generic 

 heading; the ovipositor not protruded. Forev>dng with a broad more 

 densely ciliated cross-band across the middle of the disk, the basal 

 area proximad of the cross-band v/ith weaker, paler cilia, or in large 

 part bare, and the apical part beyond the band moderately thickly 

 ciliated but enclosing between itself and the cross-band an oval spot 

 of much weaker, paler cilia, variable in size, but always v.'ell separated 

 from either margin of v,-ing, the speculum narrow but distinct, origi- 

 nating at the base of the stigmal vein and becoming lost at the middle 

 of the disk in the bare area at base of wing. Head microscopically, 

 punctulately shagreened, the punctures roundish, extremely close set 

 and v/ith slightly raised interspaces, the upper part of occuput simUai'ly 

 shagreened but rimosely, transversely striate with ver}' fine raised 

 lines instead of punctulate; face, frons, and vertex to miicii less degree 

 also provided with shallow, rather small sctigerous pm-puncturcs, 

 which are scattered but rather numerous; pronotum and mesoscutum 

 microscopically, closely reticulate, with numerous scattered, Uiinute, 

 setigerous punctures; axillae and scutellura sculptured like tlio fronto- 

 vertex, but the microscopic pimctures considerably deeper, producing 

 a mucli more opaque effect, those on the axillae slightly larger, T'ore 

 oval, and transversely arranged; propleura, prepectal plates, tegulae, 

 and anterior half of mesopleura like the scutum, but the reticulations 

 considerably coarser, the posterior half of mesopleura becoming longi- 

 tudinally striate; mctanotum transversely and very finely aciculate, 

 the propodeum nearly smooth; abdomen coarsely, longitudinally reti- 

 culate on the sides of the first tergite, transversely and more coarsely 

 reticulate at the middle of the tergite, and becoming smooth on the 

 anterior margin of the segment, the following segments especially the 

 next two with a similar sculpture. Length, 1.21 to 2 mm. 



Head dark olive green (R.) ' with a strong ])ut not brilliant metallic 

 luster, rarely somewhat bluish black, the clypeal region up to the 

 bases of the antennae somewhat brovvnish yellow; pronotum and 

 mesoscutum greenish or more rarely bluisii black with a metallic 



1 An " XI." in this and tho follovving descriptions implies that the color in question had been detennined 

 after comparison with Ridgvray's color plates in Color Standards aJid Komenclaturc, Washington, B.C., 

 1912. 



