AMERICAN DIPTERA. 207 



pulvilli and bases of tarsal claws yellow; a reddish yellow vitta on 

 the upper side of the anterior femora; hairs and bristles yellowish- 

 white, those on the hypopygium and in the middle of mesonotum 

 chiefly black; third segment of antennae narrow and elongate, about 

 seven times as long as the style; body grayish pruinose, very thin in 

 middle of mesonotum, the hypopygium polished; mesopleura bare, 

 hypopleura hairy; wings, including the veins, brown, rather narrow, 

 the first posterior cell slightly narrowed toward the apex, the fourth 

 closed far from the wing margin." 



Type. — U. S. N. M., Cal. No. A single male specimen. 

 Habitat. — Southern Texas. 



Stenopogon ochraceus. 



Stenopogon ochraceus Van der Wulp, Tijdschr, v. Ent., XII, 

 212; PL IV, fig. 9; XXV, 96, notes; refers to Scleropogon. 



Scleropogon ochraceus Osten Sacken, Cat., 1878, note 101. 

 cj 1 . — Length 12 lines. — Translation. — This specimen is a male, 12 

 lines long and entirely ocher yellow; only on the thoracic dorsum 

 appear dull blackish and chesnut-brown longitudinal stripes, and on 

 the upper side of the fore femora is a dark brown longitudinal stripe. 

 The face is small and not sunken; the antennse are tawny yellow, the 

 third segment is as long as the first two taken together, the style about 

 half as long as the third segment. Bristles of the lower half of face 

 stout, bright ocher-yellow, as also are those on the occiput, chin and 

 cheeks. Hair and bristles of the thorax and legs also bright ochre- 

 yellow. The wings are yellowish with brownish-yellow veins, the 

 venation differs from all other species known to me, both wings are 

 entirely alike and represented in fig. 6; the first and fourth posterior 

 cells, together with the anal cell, are closed and the second posterior 

 cell is divided by an extraordinary cross-vein. This venation agrees 

 only with that of Algerian Dasypogon heteroneurus Macq. (Dipt. Exot. 

 I, 2, 41. 19, pi. 3, fig. 7), which was placed in the genus Stenopogon 

 by Loew. I have, therefore, placed this North American species pro- 

 visionally in this genus and wish, by means of this communication, to 

 call the attention of more skillful dipterologists to consider the proper 

 establishment of it. 



Habitat. — North America. 



I do not know this species. 



In Note 101 of his 1878 Catalogue, Osten Sacken says, 

 * * * if I understand Mr. v. d. Wulp's letterpress, the 

 front tibiae are armed with a spur. How can, in this case, 

 the species be a Stenopogon?" 



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



