116 
repeated by Brauer and Bergenstamm.! Two species occur in our 
fauna, and in each there are three postsutural and two or three sterno- 
pleural macrochiete : 
Tibie and antenne, except sometimes apex of second joint, black; 
apical cell closed, frontal bristles descending beneath base of 
second antennal joint; length, 6 to 7 mm. Beverly, Mass.; Tif- 
ton, Ga.; Georgetown, Fla.; Mobile, Ala.; Agricultural Conese: 
Miss.; St. Louis, Mo., and Los Angeles County, Cal. (Proe. 
Acad. Nat. Sei. Philadelphia, p.311; Sept., 1895.) .. .dentata Coq. 
Tibiee and second antennal joint yellow, apical cell open, frontal 
bristles not descending to base of second antennal joint; black, 
the palpi, apex of proboscis, first two jomts of antennie, tro- 
chanters, apices of femora, and whole of tibize yellow; front of 
female as broad as either eye, the sides brownish gray pollinose, 
two pairs of orbital bristles, face white pollinose; antennie 
reaching slightly below middle of face, the third joint one and 
one-half times as long as the second, arista thickened on the 
basal fourth, vibrissie inserted three-fourths the length of the 
third antennal joint above the oral margin, two or three bristles 
above each, cheeks one- fifth as broad as the eye height; thorax 
gray pollinose, marked with four black vittwe; abdomen gray 
pollinose, a black dot at base of each hair, the hairs depressed, 
a marginal pair of macrochetie on the second segment and a 
marginal row on the third and fourth; wings hyaline, third vein 
bearing one or two bristles near the base, the others bare, apical 
crossvein nearly straight, bend of fourth vein forming an obtuse 
angle; calypteres whitish; length, 4 mm. Santa Cruz Moun- 
tains, California. A single female specimen, collected by <A. 
Koebele. Type No. 3620, U.S. National Museum. . tibialis un. sp. 
Genus PSEUDOCHATA Cog. 
Pseudocheta Coquillett, Proc. Acad. Nat. Sci. Philadelphia, p. 309; Sept., 1895. 
Our species have two or three pairs of backwardly curving macro- 
chet on the sides of the front in both sexes, and with two pairs of 
forwardly directed orbital bristles in the female, wanting in the male; 
four postsutural macrochietie : 
With only two sternopleural macrochetie; black, including the 
palpi; third joint of antenne in the male five, in the female 
three, times as long as the second; length, 5 to7 mm. From the 
type specimen. Northern Illinois; Tifton, Ga.; Charlotte Har- 
bor, Florida, and Santa Barbara County, Cal. (Proc. Acad. Nat. 
Sei. Phila., pgsl0; Sept...1395.) "ce a a ee argentifrons Coq. 
With four sternopleural macrochetie; black, the apex of scutelluim, 
sides of second segment of abdomen, hind corners of the first and 
front corners of the third, yellow; front of female scarcely as wide 
as either eye, the sides and face silvery pollinose, frontal vitta 
| Zweif, des Kais. Museum zu Wi ien, Vv I; p: 226; 1893. 
