122 THOMAS SAY FOUNDATION 



humped in profile, extending forward, with slender 

 black hairs. Forceps reddish yellow, with black tips, 

 straight and tapering, slightly curved forward apical- 

 ly, behind and on outer margin with long outstand- 

 ing black hair; accessory plate small, yellow; poster- 

 ior clasper brown, deeply excised before the apex, so 

 it is strongly hooked; anterior clasper longer, lighter 

 colored, not hooked. Penis brownish, unsegmented, 

 long and nearly straight, smooth and shining, ending 

 in two rounded enlargements separated by a median 

 notch; on the front side well before the apex and 

 slanting away from it are two pairs of pale, soft pro- 

 cesses. Fifth sternite visible as a pair of narrowly 

 separated black slender sclerites covered with dense 

 short black hairs. 



Legs black; middle femur with long and well- 

 developed comb on lower hind side toward tip; mid- 

 dle tibia with one bristle on outer front side ; hind tibia 

 without villosity. 



Wing subhyaline, no costal spine; third and 

 fifth costal segments nearly equal; first vein bare, 

 third hairy nearly to the crossvein. 



Female. Front .339 of head width (average of 

 five,— .320, .338, .340, .345, .350), the usual two or- 

 bitals, and the outer vertical developed ; frontal stripe 

 over three times as wide as one side above; frontals 

 about 10, the lowest just at the middle of the second 

 antennal joint, and the two rows perfectly parallel; 

 parafrontals and parafacials golden pollinose, the lat- 

 ter with numerous rather scattered small hairs. Two 

 genital segments (tergites) distinctly visible, the 

 fifth and sixth; they are red, the fifth with a fringe 

 of black bristles, and its spiracle conspicuous ; the red 

 sternites are apparently the sixth and seventh, as 

 there are five black ones before them ; the latter is long 

 and wide, but square at end, not in the least drawn 

 out to form a larvipositor. Middle tibia with two 

 bristles on outer side. 



