68 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. 62. 
cle above, lower third silvery pollinose, the upper two-thirds brown- 
ish gray, with very short black pile; two small semicircular velvet 
black spots on the eye margin just above the silvery area of the frons. 
(Fig. 52.) The antennae darker than in the male. Thorax with a 
narrow median dark stripe. Abdomen much asin the male, the black 
pile from the fourth segment on is quite numerous and erect; there 
is some reddish color at the base of the fifth segment, the silvery 
posterior margin of this segment quite broad, and a lateral spot on 
the posterior margin of the sixthsegment. Wings more hyaline than 
in the male; cell R beyond stigma pale brown and pale borders to 
veins R—-4 and R-5 beyond the furcation. 
Type locality —Claremont, California (C. F. Baker). 
I have selected as a neallotype a specimen taken at Alamogordo, 
New Mexico, May 15, 1902 [A. N.S. P.] 
Type.—Male, No. 8035, U.S.N.M. 
Distribution.—Among the specimens examined was a male taken at 
Alamogordo, New Mexico, May 15, 1902 [A. N.S. P.]; a male and 
female taken at the same place, June 2, 1902, and in the same collec- 
tion. Amale and female taken at Superstition Mount, Highley, Ari- 
zona June 13, 1917 (EK. G. Holt), [Biol. Surv.]. 
PSILOCEPHALA SUBRUFA, new species. 
Female.—Length 6.5mm. Very near the preceding species. Differs 
in having the antennae pale yellow, with short black and yellow hairs; 
bristles of occiput, thorax, scutellum, and coxae yellow. The humeri, 
scutellum except base, praescutellar callosities, pleura, coxae and legs 
largely yellowish. Halteres yellow. Tips of tibiae, the last two 
tarsal joints, and apical portion of the first two brown. Bristles of 
legs black. Abdomen reddish yellow, short, sparse yellow pile on 
first segments, black pile on the remaining segments; a silvery spot 
on the posterior angles of the third and fifth segments. Wings in- 
fuscated about as in P. aurantiaca and the venation the same. 
Type locality.—Holotype, female, collected at Highley, Arizona, 
June 13, on Superstition Mount (KE. G. Holt). 
Type.—In the collection of the United States Biological Survey. 
This may be a color variety of aurantiaca Coquillett, as there are 
no apparent differences of structure in the females, but the male may 
prove to be different. The type is an unique specimen. 
PSILOCEPHALA MORATA Coquillett. 
Plate 6, fig. 40, and plate 8, figs. 83 and 105. 
1893. Psilocephala morata CoquiLueETT, Can. Ent., vol. 25, p. 225. 
This species is near festina Coquillett. The antennae, female frons, 
and male genitalia are figured in this paper. The knob of the halteres 
