6 PROCEEDINGS OF THE NATIONAL MUSEUM vol.74 



ous cilia on the whole of their upper surface, which extend along 

 the following joints although much shorter. 



PSILOPUS PLANIPES, new species 



Male. — Length 4 mm. Face green, a little narrowed below ; when 

 seen from above it is nearly covered with silvery white pollen. Front 

 shining green. Palpi very small, black ; proboscis yellow. First two 

 antennal joints black (third missing in type) ; longest bristle on sec- 

 ond joint but little longer than diameter of joint. 



Thorax and abdomen shining green with bronze reflections; the 

 first three incisures at base of abdomen narrowly yellowish; bristles 

 of thorax and abdomen short; scutellum with one pair of bristles; 

 posterior edge of pleurae narrowly yellow. Hypopygium (fig. 7) 

 small, brown, with two narrow brown appendages projecting down- 

 ward and fringed with long hairs. 



All coxae, femora and tibiae wholly yellow, tarsi yellow with last 

 joint black; fore coxae nearly bare, with black bristles at tip; bristles 

 on outer surface of posterior coxae yellow; anterior and posterior 

 tarsi plain, without bristles or long hair; joints of fore tarsi as 

 56-21-14r-10-6 ; first joint of middle ones as 87; joints of posterior 

 pair as 62-28-12-9-5. Calypters yellow with brown tips and yellow 

 cilia ; halteres yellow. 



Wings grayish ; costa with rather conspicuous, delicate, recumbent 

 hair ; venation as in hUohata., new species ; fourth vein from the cross 

 vein to the fork 44, from the fork to the wing margin 22, last sec- 

 tion of fifth vein 18 and the cross vein twenty-four fiftieths of a 

 millimeter long. 



Described from one male, taken by Nathan Banks, July 8, 1924, on 

 Mount Hope, Panama Canal Zone. 



Type. — In the Museum of Comparative Zoology. 



PSILOPUS MENSOR, new species 



Male. — Length 3.5 mm.; of wing 4 mm. Front and face purple, 

 the latter with a little brownish pollen, that around the edge more 

 white, suture near apical third, curved so as to make the lower 

 portion nearly round. Palpi black, proboscis brown. Antennae 

 black, third joint small, brown, bristles of second joint a little 

 longer than the antenna; arista dorsal, scarcely as long as the width 

 of the head. 



Dorsum of thorax and scutellum purple, pleurae partly yellowish, 

 bristles of thorax moderately long. Abdomen purple with the in- 

 cisures narrowly blue-green, its bristles slender and rather short. 

 Hypopygium brown with brown appendages, which are slender and 

 about as long as the hypopygium. 



