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Genus BRACHYCOMA Rond. 
Brachycoma Rondani, Dipterologiw Italic Prodromus, Vol. I, p. 69; 1856. 
Laccoprosopa Townsend, Trans. Amer. Ent. Soc., Vol. XVIII, p. 365; December, 1891. 
Sarcotachinella Townsend, loc. cit., Vol. XIX, p. 110; 1892. 
A comparison of a cotype specimen of Laccoprosopa sarcophagina 
(the type species of this genus) kindly submitted by Mr. Charles Rob- 
ertson, of Carlinville, Il., with a specimen of Brachycoma devia (the 
type species of the latter genus) received from and identified by Brauer 
and Bergenstamm, 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 macrochietee : 
iehGurthsesment of abdomen wholly black .°: 2.222.222 -.1...2%: Ds 
Rourth segment largely yellow, abdomen destitute of discal macro- 
chet, scutellum bearing three marginal pairs, bend of fourth 
Ze InN el [OCMC TL DG tees Pye ieee cla) sh ee ees = pier 
2. Sides of face each bearing a row of macrochete, palpi black; 
length, 8 to 10 mm. Southern California. (Entomological 
News,;-Vol. Vi, ps 72s Sune, W894.\e. oe. 5. .. davidsoni Coq. 
Sides of face bearing short bristly hairs not disposed in rows, palpi 
yellow; black, the palpi and fourth abdominal segment yellow, 
antenne 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; antenni 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 macrochietie, 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. 3638, 
Ges National onset 2. i a2e2. 00s... s ee teet apicalis 1. sp. 
3. Second and third segments of abdomen destitute of discal macro- 
chet, thorax marked with three or five black vittwe.....-. 4, 
Second and third segments bearing discal macrochetie, thorax 
marked with four black vittwe; 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, antennie four- 
fifths as long as the face, the third joint scarcely longer than 
