112 
11. Palpi yellow, the three uppermost frontal bristles in each row 
noticeably longer than the next ones 12. 
Palpi, except the apices, black, the three uppermost frontal bristles 
not longer than those below them, no hairs below the lowest 
ones, vibrissa 1 on a level with front edge of the oral margin; 
black, the apices of palpi and of scutellum, yellow: no orbital 
nor ocellar bristles in the male, frontal bristles descending to 
base of third antennal joint, cheeks one fifth as broad as the 
eye height, facial ridges bristly on the lowest fourth, antennae 
nearly as long as the face, the third joint twice as long as the 
second, penultimate joint of arista slightly longer than broad; 
thorax gray poll i nose, marked with four black vitta\ abdomen 
gray pollinose on the last three segments, with reflecting darker 
spots, the narrow hind margins of the segments shining black, 
hairs depressed, first three segments bearing marginal macro- 
chaetae, wings hyaline, slightly tinged with yellow basally, 
third vein bearing two bristles at its base, fourth vein beyond 
the bend nearly straight, cal\ pteres whitish; front pnlvilli 
slightly longer than tin' last tarsal joint; length, mm. Colo- 
rado. A single male specimen collected by Mr. Carl F. Baker. 
Type No. 3013, U. S. National Museum bakeri n. sp. 
12. Front in the male as broad as, in the female one and one-fourth 
times as broad as, either eye, third joint of antennae two and 
one third times as long as the second, apical pair of macro 
chaetae on scutellum curving backward and nearly horizontal, 
vibrissa* noticeably above the level of- front edge of the oral 
margin, arista thickened on the basal three-fifths; length, 11 
mm. Horseneck Beach, Mass.; southern Illinois, and Florida. 
(Biol. Oent-Amer., Diptera, Vol. II, p. 110; March, 1890: Masi- 
cera.) fraudulenta v. d. W. 
Front in the male two-thirds, in the female four-fifths, as wide as 
either eye, third joint of antenna' four times as long as the sec- 
ond, arista thickened on the basal two-fifths, vibrissas on a level 
with front edge of the oral margin, apical pair of macroclneta; 
on the scutellum curving forward and suberect; black, the 
palpi, and sometimes apex of scutellum and sides of the second 
abdominal segment, hind angles of the first and front angles 
of the third, yellow: frontal bristles descending slightly below 
the arista, sides of front bearing numerous bristly hairs and 
one or two macrochaetae, two pairs of orbital bristles in the 
female, none in the male, cheeks one-fifth as broad as the eye- 
height, facial ridges bristly on the lower half, the bristles 
ascending two-thirds or more of distance from the vibrissas to 
the lowest frontal bristles, antennae nearly as long as the face, 
penultimate joint of arista slightly longer than broad; thorax 
gray pollinose, marked with four black vittse, abdomen on last 
