1916.] NATURAL SCIENCES OF PHILADELPHIA. 507 
ish black, the dorso-pUniral incin])rancs a little brighter. Halteres 
short, dull yellow throughout, the kno])s elongate. Legs with the 
coxae brown, the trochanters yellowish brown; femora and tibise 
dark brown, the former a little brighter at the base; tarsi light brown^ 
the tips of the segments and all of the terminal two s(?gments darker. 
Wings with a dusky suffusion, the costal and stigmal regions a little 
more suffused; veins dark l)rown. Venation (Plate XXVII, fig. 38): 
first deflection of Ro elongate, oblique, not perpendicular as in ursinus 
(Plate XXVII, fig. 39); fusion of M3 and Cui slight, shorter than the 
free portion of Cui alone. 
Abdomen dark brownish black with a long pale pubescence. 
Hypopygium narrowed, the ventral appendage verj' long, slender, 
acicular and almost straight, heavily chitinized. 
Habitat.- — Eastern United States. 
Holotype, &, Ashland, Camden County, New Jersey, May 13, 
1905. 
Type in the collection of the United States National Museum. 
This species occurred in the United States National Museum 
collection, bearing the label "M. ursinus f" in Coquillett's writing. 
M. ursinus Osten Sacken, probably the smallest crane-fly in the 
United States (wing of the male, 2.4 mm.), is the only species with 
which it might be confused; the venation of the two species is quite 
distinct, that of the new species being much more of the normal 
Molophilus type. M. ursinus (Plate XXVII, fig. 39) has the upward 
deflection of R2 almost perpendicular and in a line with the radial 
cross-vein; basal deflection of Ciii before the fork of M, the fusion of 
Cui and M3 being correspondingly extensive, longer than the free 
portion of Cui alone ; there is a clear, hyaline area running along the 
anterior face of vein M, this obliterating the base of M1+2; M. nova- 
ccesariensis (Plate XXVII, fig. 38) has the upward deflection of R^ 
elongate, oblique; basal deflection of Cui about at the fork of M, the 
fusion of Ciii and Ms being very slight, not more than one-half the 
free portion of Cui alone; there is no hyaline obliterative mark along 
vein M and the base of M1+2 is distinct. 
EMPEDOMORPHA gen. n. 
Head with the front broad, the eyes widely separated. Rostrum 
short. Palpi four-segmented, the segments subequal. Antennae 
16-segmented, the second segment not longer and only a little broader 
than the third; flagellar segments oval with verticils just below 
mid-length; terminal segments smaller. Legs moderately stout, th& 
