1923] 
The Genus Cyrtopogon 
111 
Cyrtopogon ablautoides, new species 
Male . — Length 11 mm. Head cinereous pollinose, frontal 
hairs whitish, becoming black at orbits, hair of center of face dense 
and white with slight yellowish tinge, of sides and beneath black, 
hairs of occiput abundant, silvery, nearly white, antennae 
slender, the style one-fourth as long as third joint, its basal 
segment scarcely visible. Thorax dusted with yellowish-gray 
pollen, the geminate stripe interrupted one-third the distance 
in front of scutellum, lateral stripes nearly obsolete, slightly 
darkened in front of suture and a weaker indication behind, 
three strong lateral presutural bristles, four intraalar, post- 
alar callosities with four black bristles; hairs of notum white in 
front, a few blackish hairs intermixed behind, scutellum flat, 
brownish-gray pollinose, disc with erect white pile, margin with 
white pile, about six black setae, pleurae gray pollinose with yellow- 
ish tinge on mesopleura which also bears long white pile, tri- 
chostical hairs yellowish-white. Abdomen with shining or 
subshining anterior margins to the segments the posterior 
margins white pruinose, a central subshining black spot on each 
of segments two, three and four, sides of segments two, three 
and four subshining except posteriorly, the first three segments 
bearing dense lateral tufts of whitish yellow hair, hair of re- 
maining segments sparse short and white, hypopygium small 
and subshining black. Legs dusted, femora with whitish pile, 
front tibiae bristly, the bristles of extensor face stout and black, 
of posterior face strong and yellow, of interior face fine and 
setiform, flexor surface golden pubescent; middle tibiae with dense 
cluster of white pile at two-fifths its length on anterior face, 
bristles mainly whitish, similar tuft of white pile on front face 
of middle metatarsus; bristles of hind tibiae whitish and black 
mixed, claws black, pul villi alutaceous. Halteres with pale yellow 
knob, calypteres yellow; wings hyaline, veins narrow and black, 
anterior crossvein at two-fifths length of discal cell, anal cell 
closed or narrowly opened at margin. 
Female . — Apical segments of abdomen shining black. 
Types. — Mabton, Washington, May 3, 1911 (Melander). 
Paratypes from Lind, Wash. May and June (F. W. Carlson), 
