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Genus BRACHYCOMA Rond. 
Brachycoma Rondani, Dipterologia* Italic* Prodromus, Vol. I, p. 69; 1856. 
Laccoprosoj>a Towiisend, Trans. Airier. Ent. Soc, Vol. XVIII, p. 365; December, 1891. 
Sarcotachinella Towiisend, loc. cit., Vol. XIX, p. 110; 1892. 
A comparison of a cotype specimen of Laecoprosopa sarcophagi na 
(the type species of this genus) kindly submitted by Mr. Charles Rob- 
ertson, of Carlinville, 111., with a specimen of Brachywma devia (the 
type species of the latter genus) received from and identified by Brauer 
and Bergenstanmi, fails to disclose any difference of generic impor- 
tance; and the same is true in regard to specimens that I identify as 
Sarcotachinella intermedia Town. All of our species have only three 
postsutural macrochaetae : 
1. Fourth segment of abdomen wholly black 3. 
Fpurth segment largely yellow, abdomen destitute of discal macro- 
chaetae, scutellum bearing three marginal pairs, bend of fourth 
vein appendiculate 2. 
2. Sides of face each bearing a row of macrochsetse, palpi black; 
length, 8 to 10 mm. Southern California. (Entomological 
News, Vol. V, p. 172; June, 1894.) . .davidsoni Coq. 
Sides of face bearing short bristly hairs not disposed in rows, palpi 
yellow; black, the palpi and fourth abdominal segment yellow, 
antennae more or less reddish; front in the male one-half, in 
the female almost, as wide as either eye, three pairs of orbital 
bristles in the female, wanting in the male; cheeks two- thirds 
as wide as the eye height; antennae five sixths as long as the 
face, the third joint one and two-thirds times as long as the 
second, arista thickened on the basal fourth; abdomen gray 
pollinose, the first three segments marked with a black dorsal 
vitta and two subdorsal rows of black spots situated on the 
hind margins of the segments; second segment bearing a small 
marginal pair of macrochaetae, the third and fourth each with a 
marginal row; front pulvilli of male slightly longer than, of 
the female two-thirds as long as, the last tarsal joint; wings 
hyaline, third vein bristly almost halfway to the small cross- 
vein, calypteres white; length, 7 to 8 mm. Connecticut and 
Virginia. A single specimen of each sex, that from Virginia 
collected by Theodore Pergande May 23, 1884. Type No. 3038, 
U. S. National Museum apicalis n. sp. 
3. Second and third segments of abdomen destitute of discal macro- 
chsetai, thorax marked with three or five black vittre 4. 
Second and third segments bearing discal macrochaetae, thorax 
marked with four black vittae; black, the palpi and base of 
third antennal joint yellow; front in female three-fourths as 
wide as either eye, two pairs of orbital bristles, antenna' four- 
fifths as long as the face, the third joint scarcely longer than 
