56 
of orbital bristles, frontal bristles descending to middle of second 
antennal joint, antennie as long as the face, the third joint three 
times as long as the second, two and one-half times as long as 
wide, arista thickened on the basal two-thirds, the penultimate 
joint three times as long as broad, two-fifths as long as the last 
joint; vibrissze slightly below level of front edge of oral margin, 
only two or three bristles above each; thorax gray pollinose, 
not vittate, scutellum the same, bearing two pairs of long mar- 
ginal macrochetze and a short apical pair; abdomen gray pol- 
linose on bases of the second and third segments, second segment 
bearing a marginal pair of macrochete, the third with a mar- 
ginal, the fourth with a discal, row; calypteres white; length, 
4mm. Natrona, Pa. A single female specimen collected by 
Mr. C.W. Johnson, July 31, 1895. Type No. 3536, U.S. National 
MUSOU 2.22. 22 oe Reeser ee oss Sete aes eee johnsoni n. sp. 
2, Third joint of antenne in the male truncate at the apex, where it is 
over twice as wide as at its base, its upper edge nearly straight; 
length,3mm. Southern California; and Owl Creek Mountains, 
Wyoming. (Konig. Sven. Fregatt. Eugenies Resa, p. 527; 1868: 
Lophosia. Clausicella antennalis Coquillett, Journal N. Y. Ent. 
Soc, Vol, Lily p56. une, 1600.)c eastern = eee setigera Thom. 
Third joint rounded at the apex where it is at most one and one- 
half timés as ‘broad as at its pase. 22. 542-22 eee 3. 
3. Last joint of front tarsi of female over four times as long as the 
second, third joint of antennz of male nearly straight on upper 
edge, noticeably longer than wide; length 3 to 4 mm. White 
Mountains, New Hampshire; Lakeland, Md.; and Northern 
Illinois. (Journal N. Y. Ent. Soc., Vol. I, p. 56; June, 1895. 
New genus near Bigonicheta, Brauer and Bergenstamm in 
LR EE Nie > eee late tenn erect nee eee eee eke Cea ich tarsalis Coq. 
Last joint of front tarsi of female shorter than the second, third 
joint of antenne of male strongly convex on upper side, only 
slightly longer than wide; black, the palpi yellow; front in both 
sexes one and one-half times as wide as either eye, two pairs of 
orbital bristles, frontals descending almost to tip of second 
antennal joint, facial ridges bristly on the lowest two-fifths to 
one-half, antenn almost as long as the face, the third joint five 
times as long on the second, arista thickened nearly to the 
tip, the penultimate joint two-thirds as long as the last one; 
thorax gray pollinose, not black vittate, abdomen shining, bases 
of last three segments whitish pollinose except in the middle; 
wings hyaline, third vein bearing one or two bristles at the 
base, calypteres whitish; length, 3 to 3.5 mm. White Mount- 
ains, New Hampshire, and New Bedford, Mass. Three males 
and one female, the former collected by the late H. K. Morrison, 
the latter by Dr Hough 2222 ees oer ee usitata . sp. 
