83 
subshiuing, last three segments lightly grayish pollinose except 
their apices, each segment bearing marginal macrochaetae, wings 
*hyali»e, base of third vein bearing three bristles near the base, 
apical cell closed and very short petiolate, ending slightly before 
the extreme wing tip ; calypteres whitish : length, 4 mm. Tifton, 
Ga. A single female specimen collected in June, 189G, by Mr. 
G. li. Pilate. Type No.3582, U.S.Nationa] Museum. genalis n.sp 
Genus ATACTA Schiner. 
Atacta Scliiuer, Reise der Fregatte Novara, Diptera, p. 328; 1868. 
Our single species is black, the apex of the scutellum yellowish, the 
fourth segment of the abdomen wholly golden yellow; front of male 
less than one-third as wide as either eye, the sides bluish-gray polli- 
nose and thickly covered with short suberect hairs, frontal bristles 
descending nearly to middle of second antennal joint, cruciate except 
the vertical pair; checks one-fourth as wide as the eye-height, face 
yellow poll i nose, the ridges broadly bordered internally with black, 
sides of face at narrowest part one-third as wide as the median depres- 
sion, vibrissa' situated two-thirds the length of the second antennal 
joint above the level of front adga of oral margin, ridges bristly on the 
lowest fifth, antennae two-thirds as long as the face, the third joint 
slightly longer than the second, arista thickened on the basal two-fifths, 
the penultimate joint broader than long; thorax gray pollinose, marked 
with four black vittae, four postsutural and l'onr sternopleural macro- 
chaetae, scutellum bearing three pairs of long marginal; abdomen gray 
pollinose on the first three segments, the first two destitute of dorsal 
macrochaetae, the last two each bearing a marginal row; front pul villi 
as long as the last tarsal joint, middle tibiae each bearing four or more 
macrochaetae on the front side near, the middle: wings hyaline, third 
vein bearing two or three bristles near the base, calypteres white; 
length, 12 mm. Tifton, Ga. A single male specimen collected Sep- 
tember 28, 1896, by G. R. Pilate. Type Xo. 3Z83, U. S. National 
Museum apicalis n. sp. 
Genus SIPHOSTURMIA, new genus. 
The principal characters of this genus have been given in the table 
of genera on previous pages. The type species is black, the first two 
joints of antenna', lower part of face, palpi, scutellum, apex of abdomen, 
and sometimes the sides, yellow; four postsutural and four sterno- 
pleural macrochaetae, two or more on front side of each middle tibia 
near the middle, marginal ones on the first three, or the second and 
third, segments of abdomen ; length, 10.5 mm. Tifton, Ga., and Florida. 
(Journal N. Y. Ent. Soc, Vol. Ill, p. 10G; September, 1895: Argyro- 
phylax.) rostrata Coq. 
