358 PROCEEDINGS OF THE NATIONAL MUSEUM vol.94 



quadrate ; club very slightly thicker than f unicle, obliquely truncate at 

 apex, and slightly longer than two preceding segments combined. 



Mesoscutum much longer than broad, deeply concave posteriorly; 

 parapsidal grooves deep; prescutum extending a little beyond middle 

 of mesoscutum, very finely sculptured, opaque; scapulae anteriorly 

 sculptured like prescutum, posteriorly a little less strongly sculptured 

 and compressed into sharp cariniform ridges for about one-third their 

 length; concave posterior portion of mesoscutum somewhat shining 

 but with distinct shallow sculpture and with pubescence similar to 

 that on rest of mesoscutum; scutellum sculptured about like prescu- 

 tum, with numerous erect black bristles evenly distributed over its 

 surface; axillae sculptured like scutellum; propodeum very faintly 

 reticulated, shining and bare except for a row of hairs along the lateral 

 and posterior margins, the elevated flange at middle of metanotum 

 distinct; mesopleuron finely reticulated anteriorly, its posterior half 

 very finely longitudinally striated. 



Forewing a little less than three times as long: as broad ; marginal 

 vein slightly more than twice as long as stigmal vein ; postmarginal 

 longer than stigmal; costal cell with weak ciliation basally, a little 

 more than apical half entirely bare except for a conspicuous and more 

 or less double row of long, straight hairs on under surface near the 

 point where submarginal vein begins to curve; area behind submar- 

 ginal vein and basad of beginning of curve in that vein bare except 

 for a few weak cilia in basal angle; whole width of wing between 

 beginning of upward curve in submarginal vein and apex of stigmal 

 vein densely clothed with flattened, scalelike cilia ; beyond apex of 

 stigmal vein about as densely ciliated as behind marginal vein, hairs 

 slender, not scalelike ; hind wing more weakly ciliated than forewing. 



Anterior femur broad, obliquely truncate apically, with about four 

 moderately strong, black bristles on the oblique part of margin; mid- 

 dle tibia with five short, blunt, spines on outer apical margin; pos- 

 terior femur narrower beyond than before the middle, without a 

 marginal flange ; posterior tibia compressed but not especially broad, 

 its margin with a fringe of short, pale hairs. 



Abdomen about as long and as broad as thorax, distinctly sculp- 

 tured all over but with the first, second, and third tergites dorsally 

 more shining than rest of abdomen ; ovipositor sheaths exserted one- 

 fourth to one-third the length of abdomen. 



Male. — Length 2.5 mm. Head black with a sliglit purplish tinge 

 on vertex, the clypeal region yellowish; scape yellow; flagellum black; 

 apices of mandibles brownish ; thorax above mostly black with a slight 

 purplish tinge, the lateral margins of mesoscutum and perpendicular 

 sides of axillae and scutellum pale orange yellow; pleura yellow 

 mixed with fuscous on mesopleura and metapleura ; mesosternum 



