350 
O. II. TYLKK TOWNSEND. 
ward, the others directed inward, decussate, especially in front; sides 
of face moderately broad, without bristles, but with scattered, short 
hairs, which extend also among the frontal bristles ; face somewhat 
retracted, oral margin prominent, facial ridges bare ; vibrissse decus- 
sate, inserted near the oral margin ; cheeks broad, one-half the 
liight of eyes in 9 ( ? narrower in S ), bare, with a fringe of bris- 
tles on the lower and front border, extending but slightly above the 
vibrissie. Anteniue little more than two-thirds the length of the 
face ; first joint short, second somewhat elongate, third almost twice 
the length of the second, not widened, rounded at the end ; arista 
curved outward, thickened nearly to the tip, extremely fine and 
short jiubescent, distinctly o-jointed, the second joint elongate. Pro- 
lioscis elongate, about twice as long as hight of head, geniculate, 
licnt forward, slender and corneous, labella very slightly developed ; 
palpi well developed, cylindrical, slightly thickened at tip. Scutellum 
with a decussate, ajiical pair of macrochietie ; a long lateral jiair 
reaching to base of third abdominal segment ; still a third shorter 
lateral pair. Abdomen ( 9 ) long oval in outline, flattened, vaulted, 
first segment abbreviated ; macrochsetse of abdomen all marginal 
on segments one to four. Legs moderately long. Wings with a 
small costal spine ; apical cell ending on the front border of the wing 
very much before the apex, narrowly open or almost closed in the 
margin ; hind cross-vein very oblique, arising ojiposite or a little 
behind the small cross-vein, approximating the bend of the fourth 
longitudinal ; apical cross-vein also oblique, both nearly parallel with 
the hind border of wing; fourth vein with a very long stump at its 
angle; third vein spined on the proximal two-thirds of its extent. 
Type, S', anomala n. sp. 
This genus diflers from Plagia, as above stated, by the structure 
of the proboscis, and the absence of rows of bristles on the sides of 
the face ; also by the macrochsetie being only marginal. It agrees 
with it in all other essential characteristics. 
Kiplioplagia u. sp. 9 cinereous. iJi/es brown ; face 
and cheeks silvery-white polliuose; front fully one-half the width of head, 
shaded with cinereous; frontal vitta brownish, anteriorly about one-third the 
width of the front, widening behind where it sj)lits on each side of the ocellar 
area; four pairs of ocellar bristles, a rather weak pair at the vertex directed 
outward and backward, but inclined forward at the point, a weaker pair Just in 
front of these directed forward and a little outward, a strong pair farther in 
front directed widely outward and but very slightly forward, and a weak pair 
iniinediately outside the last directed outward and more forward, weak bristly 
