PSILOPUS. 26T 



of the following taken together, upon its upper side with a 

 regular fringe of stiff, perpendicularly erect, bristle-like, minute 

 hairs, upon the under side with about seven minute black^ 

 bristles ; the joints of the tarsi from the second to the fourth very 

 rapidly decrease in length, so that the second is still somewhat 

 longer than the third and fourth taken together ; the fifth joint 

 not shorter than the fourth ; the ciliatiou of the first joint of the 

 tarsi continues also over the upper side of the second and 

 third joints, but consists there of little hairs of gradually dimin- 

 ishing length, so that finally it becomes almost imperceptible. 

 Hind tarsi black, perceptibly shorter than the tibiae ; their first 

 joint somewhat longer than the following taken together, the 

 length of which is gradually decreasing. Halteres blackish, the 

 knob brown or dingy brownish-yellow ; the tegula? with a broad 

 black border and long black cilia. Wings hyaline with black 

 veins ; the first longitudinal vein reaches nearly to the middle of 

 the wing ; the anterior branch of the fourth longitudinal vein 

 diverges from it under a nearly right angle, and turns afterwards 

 in a curve towards the margin, which it reaches rather far from 

 the apex, immediately near the tip of the third longitudinal vein ; 

 hind transverse vein rather oblique, hardly somewhat sinuated ; 

 the space between the margin of the wing and the third longitu- 

 dinal vein, beyond the tip of the first longitudinal vein, is some- 

 what more grayish than the remaining surface of the wing. 



Female. Yery like the g . The face but little broader. 

 The arista, the bristles of the second joint of the antennae, those 

 upon front, thorax and scutellum, as also before the incisures of the 

 abdomen, are much shorter. The white pubescence on the under 

 side of the femora also shorter, still of a considerable length for a 

 9. Fore tibise as in the g , still the bristles shorter. Middle 

 tibice brownish-yellow, with scattered black bristles of medium 

 length. Fore tarsi but little shorter than in the g , however of 

 the same structure and coloring. Middle tarsi plain, brownish- 

 black, not quite once and a half the length of the tibiae ; their firsi 

 joint not ciliated. Halteres light-yellowish with blackish peduncle. 

 Wings as in the J\ still without the gray shade, which is to be 

 found in the latter beyond the tip of the first longitudinal vein. 



Hab. Cuba. (Poey.) 



