14 PROCEEDINGS OF THE NATIONAL MUSEUM vol.69 



venter with a strong median plica, the ventrites entirely inclosing 

 the ovipositor to the apex of abdomen; the ovipositor, however, 

 strongly protruded, the sheaths slender, cylindrical, and nearly one- 

 half as long as the abdomen. 



Wings rather wide and reaching to the apex of the ovipositor; 

 the disk moderately densely covered with very short, pale setae, the 

 basal area beneath the submarginal vein bare; the speculum nar- 

 row, separated from basal area by a row of about seven coarser setae, 

 but uniting therewith at a point a little more than one-half way 

 to the posterior margin; marginal fringe extremely short or obso- 

 lescent; venation short or extending but little more than one-third 

 of the length of the wing, the costal cell rather wide; submarginal 

 vein not thickened distally, the marginal punctiform, the stigmal 

 emitted before the vein quite reaches the margin, the postmarginal 

 extremely short, both it and the marginal taken together being 

 i>trongly thickened and no longer than wide, the stigmal rather 

 short, somewhat curved, and not much enlarged at apex. Hind 

 wings broad, the costal cell wide and extending to the booklets, the 

 marginal fringe better developed than in the fore wings. 



Legs of moderate length and normal structure; the middle tarsi 

 strongly tapering, the first joint nearly as long as the following 

 joints combined; spur of the middle tibiae stout and almost as long 

 as the first joint of the middle tarsi; hind tarsi rather slender, 

 nearly as long as the hind tibiae, the basal joint about as long as 

 the next three joints combined, the last four joints nearly equal, with 

 the fourth joint somewhat the shortest. 



Head, except in the scrobal region of face, with very large reful- 

 gent thimblelike punctures, which are rather crowded or almost 

 confluent in the space lying between the eyes and the scrobes but 

 sparser on the frontovertex, the surface otherwise being very finely 

 reticulate or equally finely rugulose on the vertex; mesoscutum very 

 finely reticulate and with seriate shallow pin punctures; scutellum 

 duller than the scutum because of the dense microscopic thimblelike 

 puncturation. 



Eyes bare; the large punctures of head each bearing a short 

 subappressed glistening white seta; mesoscutum with similar more 

 flattened setae, interspersed or replaced with blackish setae along 

 the anterior margin ; scutellum with a few fine scattered dark-colored 

 setae, and a pair of long fine bristles at the apex. Coloration 

 metallic, but not brilliant. 



J/a/e.— Similar to the female, except in the characters of the head, 

 antennae, and abdomen. Head somewhat thinner frontooccipitally 

 and considerably more flattened anteriorly; in side view appearing 

 convex only dorsally, and considerably depressed anteriorly in 

 dorsal view; eyes less than one-half as large as in the female and 



