137 
Genus CHATOGADIA Br. and Berg. 
Chetogedia Brauer and Bergenstamm, Zweif. Kais. Mus. Wien, V, p. 336; 1891. 
Our species have four postsutural and four sternopleural macro- 
chietie; palpi yellow: 
ieMemora black sapieal/ cell Open... =... -.-.. sas. sss ee ses os ae 
Femora and tibiwe yellow, apical cell short petiolate, hind tibie out- 
wardly ciliate, sides of front densely yellowish gray pollinose, 
sides of face each bearing a row of macrochetie and with a row 
of bristly hairs between it and the eye; length,8 mm. Santa 
Fe, N. Mex. (Biol. Cent.-Amer., Diptera, Vol. I], p. 121; May, 
SOUR BET OSPNETYSH.) iit. Fc. sessed ge rufifrons v. d. W. 
2. Sides of front opaque, covered with a grayish pollen........... 3. 
Sides of front shining, destitute of pollen, sides of face bearing two 
or more irregular rows of bristly hairs between each eye and the 
row of macrochete, abdomen black, the fourth segment yellow; 
length, 10 to 12mm. District of Columbia, and Mesealero, N. 
Mex. (Tijdschr. voor Ent., Vol. II, p. 148; 1867: Baumhau- 
eria. Frontina acroglossoides Townsend, Trans. Amer. Ent. Soce., 
Vol. XVIII, p. 367; December, 1891.) - ..analis v. d. W. 
3. Macrochiete on mides of face much nearer to ee eyes than to the 
facial ridges and appearing like a continuation of the frontal 
bristles, only a few bristly hairs between them and the eyes; 
abdomen wholly black; length, 10 to 12 mm. Las Cruces, N. 
Mex., and California. (Biol. Cent.-Amer., Diptera, vol. II, p. 
1205 May, 18902 Prospherysa.) 2.022 -2..22-2-+-* erebra v. d. W. 
Macrochete on sides of face nearer to the facial ridges than to the 
eyes and widely removed from the lowest frontal bristles, numer- 
ous bristly hairs between them and the eyes, sides of abdomen 
and the fourth segment largely or wholly yellowish; length, 10 
to 12 mm. California, and Kailua, Hawaii. (Ann. Soc. Ent. 
France, p. 91; 1888: Blepharipeza.).....-....- monticola Bigot. 
Genus DICHOCERA Will. 
Dichocera Williston, Entomological News, Vol. VI, p. 31; January, 1895. 
Our two species are black, the palpi, apex of scutellum and of the 
abdomen, and in one species also the antenne, yellow; two sternopleu- 
ral macrochiete : 
Third antennal joint yellow, three postsutural macrochete, a mar- 
ginal pair on the second abdominal segment and a discal pair 
on the third; length, 10 mm. Eastern Washington. (EKntomo- 
logical News, Vol. VI, p. 32; January, 1895.)...... lyrata Will. 
Third antennal joint ered black, four postsutural macrochete, 
second abdominal segment destitute of a marginal pair, the third 
destitute of a discal pair; black, the first two joints of antennie 
