116 
Psyche 
[J une- August 
ing the supra-alar bristles and a less extended similar mark a- 
bove humeri, posterior half of mesonotum and scutellum shining 
black; hairs of thorax abundant, erect and black, of scutellum 
dense and black, no bristles; pleurae with very faint touch of 
dust, mostly shining, black pile on meso, sterno, and hypo- 
pleurae, the later dense and long. Basal three segments of 
abdomen uniformly and densly clothed with long pale yellow 
hair, apical half of abdomen shining and provided with dense 
short black pile, tip of hypopygium with a few yellow hairs; 
pile of venter entirely black. Coxae and femora shining black, 
posterior tibiae dark castaneous, tarsi reddish; pile of front 
face of front coxae white, of exterior face of hind coxae 
yellowish white; pile of femora mostly black, that of posterior 
face of front femora white, femoral bristles black; pile of 
extensor face of anterior tibiae abundant and white, of entire 
hind tibiae black, inner face of front tibiae with fulvous 
pubescence, middle tibiae with lateral black bristles, hind tibiae 
with rows of black bristles, particularly on extensor, anterior 
and apical half of flexor faces; basal half of claws reddish, apical 
half black. Stem of halteres black, knob pale yellow. Wings hya- 
line, veins black, anterior crossvein at basal fifth of discal cell, 
the discal cell nearly five times as long as wide. 
Holotype . — Alta Vista, Mt. Rainier, Wash., July 29, 1922 
(Melander). 
The specimen was taken from its vantage position on 
one of the ghost trees on the Alta Vista ridge. The structure of 
its style is unique but is probably not the result of a deformity, 
since the two antennae are alike. 
Cyrtopogon tacomae, new species. 
Closely related to C. rufotarsus Back. Ground-color 
entirely black, thorax beautifully marked with silvery white 
pattern, extensor face of front tibiae and tarsi of male densely 
covered with appressed silvery-white hairs, middle legs normal, 
anterior and extensor faces of hind tibiae of male with white hairs, 
front and hind tarsi sometimes fuscous. 
