488 Professor J. M. Aldrich on the 



down the posterior edge ; hind femora moderately thickened, with 

 a few little bristles below near the tip ; abdomen bright reddish- 

 orange in colour, toward the tip and below irregularly blackened. 

 In one specimen, a male, the reddish colour is confined to the base, 

 and there is a well-defined black spot on each side of the middle of 

 the dorsum. Wings quite deeply tinged with yellow, the heavy 

 veins reaching far beyond the middle, the first light vein but little 

 curved, ending at or but little before the apex. The first heavy 

 vein ends just perceptibly past the middle of the distance between 

 the humeral vein and the tip of the branch of the second vein. 

 The fourth light vein is distinct to the border. Length 1'3 

 to 1'7 mm. 



Two males, seven females. 500 to 1500 feet. 



8. PJiora viagnipalpis, n. sp. 

 $ . Second vein forked, anterior frontal bristles procliuate, legs 

 yellow, the hitid femora a little brownish, head, antennae, thorax, 

 and abdomen black ; palpi, halteres and pleural brownish-black. 

 The palpi in the male are enlarged, divaricate, destitute of the 

 usual strong set^. Wings hyaline, the light veins very slender, tip 

 of second vein just midway between the humeral and the fork of 

 the second, on the costa ; second light vein with a greater 

 curvature than usual, almost parallel with the vein befoie it. 

 ending but little behind the apex. The heavy veins reach but 

 little beyond the middle of the wing. Length 1-2 to 1-4 mm. 



Four males. Sea level to 1000 feet. May. 



I have also four females, same size and locality, which 

 differ in having a lighter but variable coloration. The 

 halteres and palpi vary from yellow to brown ; dorsum of 

 thorax brown. The wings are as in the preceding males. 

 I regard them as the same species, although there is 

 not usually such a range of variation, especially between 

 the two sexes. 



In addition to the species described above, the collec- 

 tion contained two specimens of somewhat different 

 coloration from any described species, and different from 

 each other, which, on account of the absence of any 

 striking characters, I leave undetermined for the present. 



