56 



of orbital bristles, frontal bristles descending to middle of second 

 /?^^^^^^ yj antennal joint, antenu;e as long as tbe face, tbe tbird joint tbree 

 j^,,^^ 'times as long as tbe second, two and one-balf times as long as 

 wide, arista tbickened on tbe basal two-tbirds, tbe pennltimate 

 joint tbree times as long as broad, twofiftbs as long as tbe last 

 joint; vibrissas sligbtly below level of front edge of oral margin, 

 only two or tbree bristles above eacb ; tborax gray poUinose, 

 not vittate, scutellum tbe same, bearing two pairs of long mar- 

 ginal macrocbii^tfe and a sbort apical pair; abdomen gray pol- 

 liuose on bases of the second and tbird segments, second segment 

 bearing a marginal pair of macrocbaita^, tbe tbird witb a mar- 

 ginal, tbe fourtb witb a discal, row; calypteres wbite; lengtb, 

 4 mm. Natrona, Pa. A single female specimen collected by 

 Mr. C. W. Jobnson, Jnly 31, 1895. Type No. 3530, U. S. National 

 Museum johnsoni n. sp. 



2. Tbird joint of antennae in tbe male truncate at tbe apex, wliere it is 

 ^ ^ over twice as wide as at its base, its upper edge nearly straight; 

 ^^^''^ ' lengtb, 3 mm. Southern California; and Owl Creek Mountains, 

 4^01,^0^. Wyoming. (Konig. Sven. Fregatt. Engenies Kesa, p. 5li7; 18G8: 



Lophomi. Clausicclla antenualis Coquillett, Journal N. Y. Ent. 



Soc, Vol. Ill, p. 56; June, 1895.) setigera Thorn. 



Tbird joint rounded at the apex where it is at most one and one- 

 half times as broad as at its base 3. 



3. Last joint of front tarsi of female over four times as long as tbe 



second, tbird joint of antenna? of male nearly straight on upper 

 edge, noticeably longer than wide; length 3 to 4 mm. Wbite 

 Mountains, New Hampshire; Lakeland, Md.; and Northern 

 Illinois. (Journal N. Y. Ent. Soc, Vol. Ill, p. 50; June, 1895. 

 JC7 l^ew genus near Bigonichaia, Brauer and Bergenstamm in 



' litt. ) ' tarsalis Coq. 



Last joint of front tarsi of female shorter than tbe second, tbird 

 joint of antenn;e of male strongly convex on upper side, only 

 /J sligbtly longer than wide; black, tbe palpi yellow; front in both 

 ■T- sexes one and one-half times as wide as either eye, two pairs of 

 l^^yi^<si.cJiS^o^ orbital bristles, frontals descending almost to tip of second 

 Wm.wv.-**.'^ . >-*<^ • antenna! joint, facial ridges bristly on the lowest two-fifths to 

 \,^^ /Vc^v-c^ / ^ ly one-half, antennae almost as long as the ftice, the third joint five 

 3 i <» ■ times as long on the second, arista thickened nearly to tbe 

 tip, the penultimate joint two-thirds as long as the last one; 

 tborax gray pollinose, not black vittate, abdomen shining, bases 

 of last tbree segments whitish pollinose except in tbe middle; 

 wings hyaline, third vein bearing one or two bristles at tlie 

 base, calypteres whitish; lengtb, 3 to 3.5 mm. Wbite Mount- 

 ains, New Hampshire, and New Bedford, Mass. Three males 

 and one female, tbe former collected by the late H. K. Morrison, 

 the latter by Dr. Hough usitata n. sp. 



