126 THOMAS SAY FOUXDATIOX 



clasper stout, blackish, strongly hooked at tip; an- 

 terior clasper shorter and paler, strongly curved, stout 

 basally. Penis with yellow basal segment of moder- 

 ate length, the distal slender for over half its length, 

 curved slightly forward, shining ; the apex on the pos- 

 terior side widened, notched into two sharp points, at 

 the base of the notch a small pair of recurved and di- 

 vergent hooks, united at base ; on the front side of the 

 tip is a blunt, black protuberance in the middle, from 

 which arise near the base (almost in the notch at the 

 tip of the back part) two pairs of upright processes. 

 Fifth sternite dark yellow, narrowly excised basally 

 for a distance, then widening V-shaped, with brown- 

 ish pubescence on the inner margin. 



Legs black; middle femur with comb behind on 

 lower side; middle tibia with two bristles on outer 

 front side ; hind tibia without villosity. 



Wings almost hyaline ; no costal spine ; third cos- 

 tal segment about equal to fifth ; first vein bare, third 

 hairy halfway to crossvein. 



Female. Front .326 of head (two just the 

 same ) ; golden color of head as in male ; outer vertical 

 present; the usual two orbitals; palpi strongly cla- 

 vate; no apical scutellars; fourth abdominal segment 

 broadly red; genital segment yellow, the orifice slit- 

 like, with rather weak bristles. 



I^ength, 6-7 mm. 



Eleven males and two females: three males La 

 Fayette, Ind. ; two males, one female, Charleston, 

 Mo., Jan. 22, 191,5, reared from Ligf/rus gihbosus by 

 E. H. Gibson (Webster, No. 13668; one male, one 

 female, Opelousas, La., June (Hough Coll.) ; five 

 males Chapada, Brazil, collected by H. H. Smith 

 (author's collection) ; one male, Wellington, Kans. 

 Webster, No. 1594.5). 



Holotype.— Male, No. 20513, U. S. N. M., from 

 LaFavette, Ind. 



Allotype.— Female, No. 20513, U. S. N. M., 

 from Charleston, IVIo. 



