I'SILOPUS. 2fil 



Steel-blue, very shining ; wings without picture, third longitudinal vein 

 elongated, costa ciliated with extremely delicate, minute hairs. Feet 

 black, the first joint of the fore tarsi with black bristles; the second 

 extremely short. Long. corp. 0.17. Long. al. 0.18. 



Syn. (?) Psilopus mundus Wied., Auss. Zweiil. II, 227, 30. 

 Psilvpus ciliatus Loew, Neue Beitr. VIII, 88, 6. 



Very shining steel-blue, the upper part of the face, the middle 

 of the front and the lateral margin of the abdomen green, the 

 sides of the front and the middle of the abdomen of a beautiful 

 purplish color. Face without hairs, only the lower part somewhat 

 dusted with white. Palpi black; proboscis brown. Antenna' 

 unusually short ; their second joint with moderately long bristles ; 

 third joint small; the arista not very long, subapical. Bristles 

 upon thorax and scutellum of medium length. Pleurae Mack with 

 a greenish reflection, gray on account of a whitish dust. Abdo- 

 men shorter and broader than usual, black, on the lateral margin 

 and on the venter for the most part whitish ; the bristles before 

 the posterior margin of the single segments of only a moderate 

 length and thickness. The small hypopygium black. Coxa? and 

 all the feet black ; fore coxa? with a white pubescence and with a 

 few black bristles. Femora with a green reflection, upon the under 

 side very scarcely fringed with long, erect, minute hairs, which 

 have near the tip of the middle and of the hind femora a black, 

 otherwise a whitish color ; the hind side of the fore femora has 

 a rather distinct black pubescence towards its end. Fore tibia' 

 upon the outside with numerous hair-like, rather long, black bris- 

 tles. Middle tibiae beset with a moderate number of proportion- 

 ally rather long black bristles. Hind tibiae upon' the outside 

 with a row of about six black bristles. Fore tarsi but little longer 

 than the tibia? ; their first joint only very little longer than the four 

 following taken together, fringed upon its outside with many black 

 bristles; the second joint extremely short, hardly as long as the 

 fifth and but very little longer than half the third ; the fourth 

 joint only very little shorter than the third. Middle tarsi some- 

 what longer than the tibia? ; first joint about once and a qua iter the 

 length of the four following taken together, with a few very short, 

 black bristles; the second to the fourth joint of gradually decreas- 

 ing length; fifth joint very small. Hind tarsi much shorter than 

 the tibia?, the first joint but little longer than the four following 



