120 
Genus TACHINOPSIS, new genus. 
The following is a description of the type species : Black, the frontal 
vitta, first two joints of antenna 1 , and the palpi yellow; front of male 
two-thirds as wide as either eye, frontal bristles descending slightly 
below the arista, no orbital bristles, hairs on sides of front short and 
sparse, cheeks one-sixth as broad as the eye height, vibrissa 1 on a line 
with front edge of oral margin, ridges bristly on the lower three- 
fourths, antenna; six-sevenths as long as the face, third joint three and 
one half times as long as the second, arista thickened on the basal 
two-fifths, the penultimate joint nearly as broad as long, thorax gray 
pollinose, marked with four black vitta 1 , four postsutural and three 
sternopleural macrochae tae ; scutellum bearing four marginal pairs; 
abdomen shining, bases of last three segments opaque gray pollinose, 
first three segments bearing marginal macrochaetae only; front pulvilli 
as long as the last tarsal joint, middle tibia; each bearing two macro 
chsetae on the front side near the middle, hind tibia 1 outwardly subcil- 
iate; wings hyaline, third vein bearing three bristles near its base, hind 
crossvein slightly beyond the middle between the small and the bend, 
last section of fifth vein almost as long as the preceding section ; calyp 
teres white; length, 7 mm. Washington. A single male specimen 
collected by Prof. O. B. Johnson. Type No. 3024, U. S. National 
Museum mentalis n. sp. 
Genus EUTHERA Loew. 
Euihera Loew, Diptera Auier. Septentrionalis Indig., Cent. VII, No. 85; 1864. 
Our single species is black, the frontal vitta, middle of face, lower 
part of head, the palpi, and femora yellow; wings brown on the costal 
edge beyond the humeral crossvein, along the last two sections of the 
fifth vein, a fascia from costa over the hind crossvein and including the 
small crossvein, finally a fascia which fills the apex of the apical cell; 
length, 7 mm. Pottstown, Pa., and Tifton, Ga. (Loc. cit.) . tentatrix Loew. 
Genus DEMOTICUS Macq. 
Demotions Macquart, Annales Soc. Eut. France, p. 442; 1854. 
» 
1. Femora largely or wholly black 3. 
Femora and tibiae yellow; three postsutural and three sterno- 
pleural inacrochreta j 2. 
2. Third vein bristly at least one-third of the distance from base to 
small crossvein, front of male five sixths as wide as either eye, 
thorax, except the humeri, and the tarsi black; length, 9 to 11 
mm. Philadelphia, Pa. ; Colorado ; California, and Washington. 
(Canadian Entomologist, Vol. XXVJ I, p. 127; May, 1895: Drep- 
cmoglossa.) venatoris Coq. 
