March, 1904 ] COQUILLETT : DiPTERA FROM SOUTHERN TeXAS. 33 



wings hyaline, a brown spot at base of second submarginal and each posterior cell, 

 also at middle of first basal and at base of discal cell ; space between apices of auxil- 

 iary and first vein yellowish, the costal margin beyond apex of first vein bordered 

 with smoky brown, veins at bases of second submarginal and third posterior cells ap- 

 pendiculate. Length, 5 to 6 mm. 



Two females, one collected at the Rio Ruidoso, White Mts., New- 

 Mexico (altitude about 6900 feet, C. H. T. Townsend), the other 

 collected by Mr. Schaeffer, in June, at Brownsville, Texas. 



Type. — No. 7352, U. S. National Museum.* 



Holopogon latus, new species. 



An unusually broad, robust species. Black, the halteres yellow, their bases 

 brownish ; hairs and bristles white or yellowish, hairs of mesonotum except poste- 

 riorly very short and sparse. Head gray pruinose, hairs of mystax very sparse, the 

 bristles confined to two or three rows along the oral margin ; first two joints of 

 antennae subequal in length, together about three-fourths as long as the third, the 

 latter slightly longer than the slender style. Thorax and scutellum opaque, grayish 

 pruinose, mesonotum with three confluent brownish-black vittEe, abbreviated posteriorly 

 and the outer pair much abbreviated anteriorly. Abdomen somewhat polished. Hind 

 legs considerably thickened, the tibiae on the outer and inner sides and the first tarsal 

 joint both above and below quite densely fringed with rather short hairs. Wings from 

 base to beyond apex of discal cell dark brown, the limits of this color strongly arcuate, 

 the remainder of the wing hyaline ; apex of second vein before middle of second sub- 

 marginal cell ; wings very broad, the alula; quite strongly developed. Length, 6 mm. 



A male specimen collected in April. 



Stenopogon tenebrosus, new species. 



Near cousanguineus, but much darker, the wings brown and without any yellow 

 coloring. Black, the halteres, pulvilli and bases of tarsal claws yellow, a reddish 

 yellow vitta on upper side of front femora, hairs and bristles yellowish-white, those on 

 the hypopygium and in middle of mesonotum chiefly black ; third joint 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, hypo- 

 pleura 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 ; 

 length, 22 mm. 



A male specimen. 



Stenopogon pumilus, new species. 



Also near consanguineus but darker, the bristles, of the legs chiefly black, etc. 

 Black, the halteres yellow, upper side of first two pairs of femora, their tibiae and tarsi 



* In my table of the species of Phthiria published in the Trans. Am. Ent. Soc, 

 XXI, pages 102 and 103, it is stated \.h2it ptincfipennis has a single black spot on each 

 side of the face ; specimens since examined which undoubtedly belong to this species 

 have two black spots on either side, as ambiguously stated by Walker in the original 

 description. 



