Genus Psorophora. 131 
The @ sent over is quite perfect and fresh, and shows 
beautiful metallic blue, violet, and green tints. They evidently 
fade to brown, as seen in some of the old specimens in the 
Museum. 
PsoropHorA Howarpil. Coquillett. 
(Canadian Entomologist, p. 258, 1902.) 
The following is Coquillett’s original description :— 
$6. Head black, upper half of occiput covered with appressed white 
scales, except a narrow median stripe, hairs black ; first joint of antennae 
yellow, second joint black, its extreme base yellow, the two terminal 
joints black, remainder of antennae alternate black and whitish, the 
plumosity black, changing to whitish at the tips; mouth-parts black, 
base of third joimt of palpi yellow, palpi covered with violet-purple 
appressed scales, the last joint narrower than the preceding, tapering to 
the apex, its hairs sparse and very short, the penultimate joint and 
apical fifth of the preceding bearing many rather long hairs; body black, 
the humeri yellow, pleurae and sides of mesonctum bearing many 
appressed white scales, abdomen on upper side covered with appressed 
violet-purple scales, those on the first segment and a few at the hind 
angles of some of the other segments white; wings hyaline, first basal 
cell much longer than the second, petiole of first sub-marginal cell sub- 
equal in length to the cell; femora yellow, the apices black and on the 
under side fringed with rather long, narrow, nearly erect scales, remainder 
of femora thinly covered with appressed violaceous scales, front and 
middle tibiae yellow, their apices brown, thinly covered with appressed 
violaceous scales; hind tibiae brown, the extreme bases yellow, covered 
with appressed violet-purple scales interspersed with many sub-erect 
brown ones; tarsi brown, the first joint, except its apex and the base of 
the second, yellow; claws of front and middle tarsi very unequal in size, 
the anterior claw of each pair bearing teeth, the other with a single 
tooth ; claws of hind tarsi of an equal size, each one-toothed ; halteres 
yellow, becoming brown at the apex. 
2. Differs from the & as follows: antennae dark brown, the first 
joint and base of the second yellow, the hairs dark brown, palpi dark 
brown, basal third yellow, bearing a few rather long hairs; hind tibiae 
yellow, the apices brown, tarsal claws equal, each one-toothed. 
Length.—6 mm. (excluding proboscis). 
Habitat.—Hartsville, South Carolina. Three ¢’s and one ? received 
from Dr. W. C. Coker, of the Johns Hopkins University. Type No. 5793. 
U.S. National Museum. 

