417 



P. stall sp. nov. 



$ Mikado orange, fuscous along carinae of face and a little spot over 

 the eyes, antennae lighter, genital styles much paler, nearly white. Teg- 

 mina with the veins and an adjoining portion of membrane white or 

 creamy white with the median portion of the cells orange-bufif. 



Medio-ventral edge of pygophor subangularly produced, lateral edges 

 broadly convex; anal segment very long and narrow, suddenly constricted 

 slightly above base then gradually widened to the truncate apex, with 

 each apical corner produced into a point and turned ventrad, anus near 

 apex ; genital styles long, the dorsal edge near base produced into a sub- 

 quadrate, flat process with a rounded process in the middle of the apical 

 margin, beyond this the dorsal margin is entire and slightly curved dor- 

 sad, ventral edge produced into a broad, blunt spine near base, beyond 

 which it is sinuous, widest beyond middle, the apex forming a slender 

 point. 



Length 4 mm. ; tegmen 6 mm. 



9 Similar to male. Preanal segment deeply emarginate to receive 

 anal segment ; anal segment much longer than broad, anus before middle 

 where the segment is broadest, beyond anus it narrows to apex which 

 is deeply emarginate leaving the corners projecting as spines; pregenital 

 plate large, longer than wide, hind margin at first gradually and then 

 steeply produced, the middle portion forming a subconical plate. 



Length 4.2 mm. ; tegmen 7 mm. 



Hab. Paramaribo, Dutch Guiana, August, 1911. De- 

 scribed from four males and five females, also one damaged 

 female from Bartica, British Guiana, March, 1901. Type in 

 the American Mus. of iSTat. Hist., Xew York. 



P. fuscinervis sp. nov. 



$ Head not produced so greatly as in P. stall. Ochraceous- 

 orange, slightly fuscous over abdominal tergites; tegmina hyaline, opaque- 

 ly white with waxy secretion, veins yellowish with fuscous patches ; wings 

 hyaline, opaquely white with waxy secretion, veins concolorous with 

 membrane. 



Pregenital plate large, posterior edge produced from sides to middle 

 into a large plate subconicle in outline, the produced portion as long as 

 the rest of the segment ; anal segment longer than broad, anus before 

 middle, apex produced into two fine spines with a rounded emargination 

 between; style well developed, projecting silghtly beyond pregenital plate. 



Length 2.7 mm. ; tegmen 5 mm. 



ITab. Bartica, British Guiana, May, 1901 (CoU. If. S. 

 Parish). Described from one female. Type in coll. Prof. IT. 

 Osborn. 



