AMERICAN DIPTERA. 203 



the first two segments of the antennas, the palpi and more or less of 

 the proboscis reddish. The third segment of the antennae black, thin, 

 not twice as long as the basal segments, beyond the middle, when 

 viewed at certain angle, clearly narrowed to the tip, this effect being 

 caused by a depression on the inner side of the distal half of the seg- 

 ment, style about one-fifth as long as the third segment. Bloom of 

 the thoracic dorsum more yellowish-brown, showing a median narrowly 

 divided stripe and two broad lateral darker stripes much abbreviated 

 posteriorly. Bristles of the face, basal segments of the antennae, 

 occiput, prothorax, coxae, sides of the basal abdominal segment and 

 many along the lateral margins of the thoracic dorsum deep yellow; 

 those of the front, a few on the pronotum and on the lateral and pos- 

 terior portions of the mesonotum black, many with pale tips. Bristles 

 of the scutellum black or reddish-yellow, the black ones usually be- 

 coming yellowish toward the tip. Mesopleuras bare, sternopleurae with 

 scarcely perceptible yellowish pile; hypopleurae with short hair of the 

 same color; the entire pleurae more grayish pruinose. Abdomen long, 

 quite slender, subpolished, reddish-yellow, with very short appressed 

 hairs of the same color, the lateral margins of the segments narrowly 

 grayish pruinose; genitalia of male reddish, the terminal segment of 

 the male often with a black spot above, the last two segments of the 

 female blackish above. Legs reddish, the fore and middle femora with 

 a short black fasciae above, the hind pair sometimes with black mark- 

 ings varying in extent, in some cases almost wholly black; hair of legs 

 wholly reddish, the bristles mostly black, a row on the outside of the 

 fore and middle tibiae reddish. Basal half of claws reddish, pulvilli 

 pale. Wings deep brownish or blackish, all or several of the cells with 

 paler centers; the first posterior cell wide open, the fourth closed and 

 petiolate, the anal narrowly open. 



Habitat. — -Ga. (type); Ga. (Morrison), Tifton, Ga. (Sept. 9, 

 C. W. Johnson) ; Lumberton, N. C. (Sept. 6, F. Sherman) ; 

 Col. (?). 



There are very good specimens of this species in the col- 

 lection of the Am. Ent. Soc. Phila. 



Stenopogon longulus (PI. XII, fig. 2). 



Stenopogon longulus Loew, Cent., VII, 50, 1866. 

 C? $. — Length 17-20 mm,; of wing 12-12.4 mm. — Head and thorax, 

 excepting the humeri, the base of the first and lateral margins of all 

 the abdominal segments, and the vittas on the femora above, black; 

 remainder of abdomen and legs reddish-yellow; head, thorax, base 

 and sides of abdomen grayish or yellowish-gray pruinose; hypopleura 

 with weak trichostical hair, sternopleurae with mere traces of fine 

 hair; third antennal segment black, much longer than the two basal 



TRANS. AM. ENT. SOC, XXXV. JUNE, 1909. 



