psilopus. 263 



long ; the appendages of the hypopygium pale ; the first joint of the fore 

 and middle tarsi ciliated upon the upper side. 

 9. Bristles upon head, thorax and abdomen, slender, of medium length ; 

 the first joint of the fore tarsi indistinctly ciliated with very short 

 minute hristles, middle tarsi plain. Long. corp. 0.18 — 0.23. Long. al. 

 0.20—0.24. 



Syn. Psilopus comatus Loew, Neue Beitr. Till, 89, 7. 



Male. Bright shining-green ; thorax and scutellura (in the 

 described specimen) more steel-blue, and the head handsome 

 purplish-blue. Palpi black ; proboscis brown. Face without 

 hairs, broader than usual; its small under side is dusted with 

 grayish-white, the upper part more convex and, from a side view, 

 more projecting than usual. The second joint of the antennae 

 with a small number of rather long, but not very stout bristles ; 

 the third joint ovate ; arista apparently apical, but, in fact, only 

 subapical, still considerably shorter than the body. Front with 

 a scattered, very delicate white pubescence ; the black bristltB, 

 inserted upon the ocellar tubercle and in the immediate proxi- 

 mity of the upper corner of the eye are hair-like and of a quite 

 unusual length. The black bristles upon the upper side of the 

 thorax and of the scutellum are of the same hair-like description; 

 also those inserted before the incisures of the abdomen, the latter 

 are only of a still more striking length than the former. Upon 

 the upper side of the abdomen there seem to be, besides the long 

 bristles before the incisures, only single short hairs of a black 

 color; upon the first segment, however, as also on the lateral 

 margin and on the venter, there is a very long whitish pubescence; 

 long, hair-like, black bristles are also to be found on the hind 

 margin of the segments of the venter, similar to those upon the 

 upper side of the abdomen. No black bands are perceptible at 

 the base of the abdominal segments. The hypopygium is partly 

 destroyed in the described specimen ; it seems that it was brown- 

 ish-black, and that it had horn-shaped yellow appendages. ( !oxae 

 black, the foremost with a long white pubescence and with Bome 

 black bristles. Femora Mack, with a green reflection; the very 

 extreme tip of the foremost ones yellow, all fringed with a scattered 

 erect pubescence of a white color, which is everywhere of a con- 

 siderable length, but longest upon the under side. Tibiae and tarsi 

 very slender, yellowish; the usual black hairs rather scattered and 

 very short. The fore tibiae upon the first two-thirds of their 



