NORTH AMERICAN DIPTERA. 
371 ) 
sexes. The smallest individuals have the front and face only one- 
third the width of the head, and, were it not for their short claws 
and pulvilli, I should consider them to be the males. I believe, 
however, that the males are the larger ones with longer claws, wider 
front, and more strongly bowed proboscis. 
<’EI«ATOMYIEI.L,.\* n. gen. 
Belongs in the Phytohue, in the section with bare eyes and petiolate 
apical cell. Of small size. Head about the width of thorax, ab- 
domen much narrower. Eyes hare, reaching little more than two- 
thirds way to oral margin. Front occupying one-third the width 
of head at vertex, wider before, rather i)rominent ; frontal bristles 
descending on sides of face to the cheeks, in a single row ; some 
short bristly hairs outside frontal bristles ; a bristle at each vertical 
angle, and the one next to it, directed backward ; next pair directed 
inward and backward, decmssate ; next directed inward and for- 
ward, decussate ; one orbital bristle directed forward ; sides of 
face rather wide at base of anteniue, much narrowed below ; face 
oblique, strongly receding, facial depression much lengthened, 
rather wide, facial ritlges bare ; cheeks very short, but high, almost 
one-half the eye-hight, extending considerably upward behind the 
eyes, bare, except bristles on posterior and lower borders; vibrissie 
decussate, inserted a little above the oral margin. Antenme as 
long as face; first two joints short, third joint much elongate, 
widened somewhat and thickened, six or seven times as long as 
the second ; arista thickened for half its length, microscopically 
pubescent, o-jointed, second joint not elongate. Proboscis short, 
fleshy, one-half as long as bight of head, labella well developed ; 
palpi slender, club-sha})ed. Three pairs of macroclnetie on scu- 
tellum, the apical pair not decussate; the median pair the longest, 
reaching to middle of second abdominal segment. Abdomen narrow, 
elongate, conical, first joint not shortened ; macrocluetie marginal 
on segments one to four, not very stout. Legs of moderate length. 
Wings reaching a little beyond abdomen, of moderate width, with 
small costal spine ; apical cell ending but little before tip of wing, 
short petiolate; bend of fourth vein subangular, without stump or 
wrinkle ; posterior cross-vein nearly straight, a tittle nearer to the 
bend of the fourth vein than to the small cross-vein. Type, C. 
Kepai'a (aiiteniia) -|- pvta (a tty). 
conica n. sp. 
