122 
height, vibriss slightly above the level of front edge of oral 
margin, five or six bristles above each; antenne five-sixths as 
long as the face, the third joint one and three-fourths times as 
long as the second, arista thickened on the basal two-fifths, the 
penultimate joint as broad as long, palpi linear, proboscis rigid, 
labella small but distinct; thorax gray pollinose, marked with 
five black vittw, scutellum bearing five pairs of marginal macro- 
chet; abdomen gray pollinose except the apices of the last 
three segments, first segment bearing marginal, the following 
two with discal and marginal macrochete; middle tibire each 
bearing two or more on the front side near the middle, hind 
tibie outwardly subciliate, front pulvilli longer than the last 
tarsal joint; wings hyaline, third vein bearing three bristles at 
the base, fourth vein rounded at the bend, beyond which it is 
nearly straight until a short distance before its apex, where it 
is strongly arcuate; calypteres white, margined with yellow; 
length, 13mm. Blue Mountains, Washington. <A single male 
specimen, collected July 15, 1896, by Prof. C. V. Piper. Type 
No. 3627, U.S. National. Museum: 2... a2 24222 me- piperi i. Sp. 
Genus PARAPHYTO Coq. 
Paraphyto Coquillett, Journal N. Y. Ent. Soe., Vol. III, p. 105; Sept., 1895. 
1. First two segments of abdomen destitute of dorsal macrochete, 
seutellum bearing three marginal pairs, three postsuturals and 
two sternopleurals, third vein bristly about halfway to the 
small:crossveim: : 22. 4-22 cece. ee Guys Re yas Bee ee ee i 
First two segments bearing dorsal, the second and third with discal 
and marginal macrochete, eons bearing five marginal 
pairs, four postsuturals and three sternopleurals, third vein 
bristly on the basal eighth before the small crossvein, abdomen 
subshining, thinly whitish pollinose, destitute of distinct black. 
spots; black, including the palpi, the face and cheeks largely 
reddish; length, 13 mm. Laggan, Brit. Amer. (Can. Entomolo- 
gist, Vol. XXIV, p. 68; March, 1892: Triva.)....gillettet Town. 
2. Abdomen subshining, thinly zray pollinose, destitute of distinct 
black spots; black, the first two joints of antenne, facial depres- 
sion,and palpi yellow; abdomen sometimes largely brownish-red ; 
length, 11 to 13 mm. Ithaca, N. Y., and Agricultural College, 
Michigan. (Journal N. Y. Ent. Soc., Vol. III, p. 105; Sept., 
L895)), S22 ees Soe ee eee chittendeni Coq. 
Abdomen opaque gray pollinose, marked with three rows of shining 
black spots; black, the first two joints of antenne, facial depres- 
sion, and palpi yellow; front of female one and one-fourth times 
as wide as either eye, two pairs of orbital bristles, frontal bris- 
tles not descending below base of antennie, sides of face at nar- 
rowest part each two-fifths as wide as the facial depression, 
