294 A. L. MELANDER. 



but it is quite different, as Mr. S. W. Henshaw tells me, in the 

 coloration and venation ; although these two characters are capable 

 of great variation in this species. 



Enipis aseiiia sp. nov. (Fig. 130). 

 Male and Female. Length 4 mm. — Black, gray pollinose. somewhat shining. 

 Head small, occiput gray poUiuose, black-bristly ; eyes bioaflly contiguous in the 

 male, and widely separated in the female, facets large above, small below (male), 

 and uniform (female) ; antennae moderate, slender, black, first joint rather short, 

 the second joint as long as the first, third joint one and one-half times the length 

 of the first two, broad at the base, suddenly narrowed to mid-way its length, then 

 nearly uniform to the tip, arista three-fourths the length of the third joint ; pro- 

 boscis black, slender, over twice as long as the height of the head ; palpi small, 

 slender, black. Thorax shining, sparsely gray-coated, disc with several short 

 black bristles and margined with a few longer ones, scutellum with two apical 

 bristles; pleurae less shining, and more closely pollinose, the row of black bris- 

 tles in front of the halteres consisting of about seven. Abdomen subshining, 

 gray pollinose, a little darker than the thoracic notura, rather long and slender, 

 cylindrical in the male, and short, depressed in the female, not conspicuously 

 bristly, its few hairs black ; hypopygium closed, subcompressed, small, with several 

 short black hairs, filament yellow, exposed at the base, not thick. Legs short, 

 robust, of the male the coxae have small bunches of fine black hairs on the ante- 

 rior side, the femora and tibise are regularly ciliate, with long slender black hairs 

 beneath, otherwise hairy, and with a few black slender bristles on the upper side 

 of the middle and hind tiljise and tarsi; the front metatarsi flattened, broad, 

 nearly as long as the remainder of the tarsus, the next three joints of the front 

 tarsi globose, densely black -bristly, the last joint slender, short, flattened ; mid- 

 dle legs slender; hind legs rather stout, the metatarsi stout, three times as thick 

 and one-half again as long as the middle ones. Of the female the coxal bail's, 

 those of the under side of the front femora, of both edges of the other femora 

 and of both edges of all the tibiae assume a flattened scale-like character, much 

 pronounced on the posterior legs; tarsi slender, hind metatarsi but little thicker 

 than the middle ones. Halteres infuscated. Wings hyaline, distinctly infuma- 

 ted, broad, rounded, basal cells short, the fourth vein not reaching the margin, 

 anterior branch of the third vein slightly curved, obliquely ascending, outer edge 

 of the discal cell deeply angulate, a distinct bristle present at the base of the 

 costa. 



One male, three females. May ; Austin, Texas. 



Enipi^!! labiata Loew. 

 Cent, i, 33. 



Male. — Eyes contiguous. Proboscis long, slender; labium very slender, the 

 labellae filiform, equal to the stipes. Palpi yellow. Antennte black. Thorax 

 cinerascent with sparse pollen, moderately shining. Hypopygium moderate, 

 pori'ect, black; the lower lamellae incurved, with short pubescence and paler 

 towards the apex. Legs black or dark brown, long, slender, with black pile and 

 bristles, all the metatarsi lengthened. Halteres fuscous or blackish, the knob 

 pale above. Wings brownish black, the stigma and veins more dusky ; the third 



