122 
height, vibrissa* slightly above the level of front edge of oral 
margin, five or six bristles above each ; antennae 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, 
label la small but distinct; thorax gray pollinose, marked with 
live black vittae, scutellum bearing five pairs of marginal macro- 
chaetae; abdomen gray pollinose except the apices of the last 
three segments, first segment bearing marginal, the following 
two with discal and marginal macroclneta 1 ; middle tibia' each 
bearing two or more on the front side near the middle, hind 
tibiae 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, 13 mm. Blue Mountains. Washington. A single male 
specimen, collected July 15, 1896, by Prof. 0. V. Piper. Type 
No. 3627, U. S. National Museum piper i n. sp. 
Genus PARAPHYTO Coq. 
Parapkyto Coquillett, Journal N. Y. Knt. Soc., Vol. Ill, p. 105; Sept., 1S95. 
1. First two segments of abdomen destitute of dorsal macrochaetae, 
scutellum bearing three marginal pairs, three postsuturals and 
two Bternoplenrals, third vein bristly about halfway to the 
small erossvein 2. 
First two segments bearing dorsal, the second and third with discal 
and marginal macrochaetae, scutellum bearing five marginal 
pairs, four postsuturals and three sternopleurals, third vein 
bristly on the basal eighth before the small erossvein, 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, 1802: Trixa.) gillettei Town. 
2. Abdomen subshining, thinly jray pollinose, destitute of distinct 
black spots; black, the first two joints of antennae, facial depres- 
sion, and palpi yellow ; abdomen sometimes largely brownish-red ; 
length, 11 to 13 mm. Ithaca, N. Y., and Agricultural College, 
Michigan. (Journal X. Y. Ent. Soc, Vol. Ill, p. 105; Sept., 
1805.) chittendeni Coq. 
Abdomen opaque gray pollinose, marked with three rows of shining 
black spots ; black, the first two joints of antennae, 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 antenna?, sides of face at nar- 
rowest part each two-fifths as wide as the facial depression, 
