ART. 20 NOTES ON THE MUSCOID FLIES REINHAED 3 



Described from 24 females reared and collected at College Station, 

 Tex., April to November (H. J. Keinhard) ; and 1 female collected 

 at San Antonio, Tex., June 21, 1928 (H. B. Parks). The abdomen of 

 the latter specimen was crushed at the time it was pinned and tlie 

 protruding larvipositor contains a partially visible shriveled white 

 maggot. Additional locality records include La Fayette, Indiana 

 (J. M. Aldrich), and Sugar Grove, Ohio, one male taken June 8, 

 1926 (D.G.Hall). 



OPELOUSIA FLAVESCENS, new species 



Male. — Eyes bare. Front very narrow above before ocelli hardly 

 as wide as ocellar triange ; vitta narrow, triangular below and reduced 

 to a line posteriorly, brownish black; parafrontals shining silvery, 

 blackish on the inner margins along the vitta. Frontals in two 

 slightly diverging rows of six to eight short erect bristles barely 

 extending to base of antennae, the uppermost pair hairlike, situated 

 a short distance below the lower ocellus, a few inconspicuous bla.-k 

 hairs in the rows but none extending on the parafacials. Inner 

 verticals well developed, outer ones small and hairlike. Ocellars 

 small, proclinate, not divergent; postocellars almost equally strong. 

 Orbitals none. Parafacials shining silvery, bare, diverging strongly 

 below, about equal to width of third antennal segment. Facial de- 

 pression with cinereous pollen on blackish background, not keeled. 

 Vibrissae large, situated at oral margin, with two or three small 

 bristles above on facial ridges which are rounded and decidedly 

 flattened. Antennae about three-fourths of the length of the face; 

 third joint brown, tinged with yellow basally, especially on inner 

 side, densely covered with white pubescence; second joint entirely 

 yellow, about one-half the length of third. Arista yellowish, slender 

 beyond the very briefly thickened base, sparsely short-haired on upper 

 side about halfway to tip, a few inconspicuous hairs on upderside, 

 basal joints short but quite distinct; cheeks about one-fifth the eye 

 height, with only a few scattered short bristles below, densely covered 

 with cinereous pollen. Occiput black, with thin gray pollen, sparsely 

 covered with short black hairs. Proboscis very short, labella large, 

 yellow. Palpi yellow, rather small, apex but slightly thickened, 

 bearing a few black bristles. 



Thorax and scutellum black, subshining, the cinereous pollen on 

 mesonotum distinctly tinged with brown, dorsal vittae indistinct. 

 Chaetotaxy : Humeral 2 ; posthumeral 1 ; presutural 1 ; notopleural 

 2; acrostichal 0, 1 (slightly anterior to hindermost dorsocentrals) ; 

 dorsocentral 2, 3; intraalar 2; supraalar 3 (small except middle 

 one); postalar 2; sternopleural 2; pteropleural 0; scutellum with 

 two large diverging laterals distinctly nearer the apex than base, 

 between these a smaller decussate apical pair, and usually an addi- 



