117 
obliterated in front of the middle by the meeting of the sides of 
the front, frontal bristles descending to the arista, cheeks one- 
tenth as broad as the eye height, vibrissa? inserted on a level with 
the front edge of the oral margin, facial ridges bristly on the 
lower three-fourths, antenna* almost as long as the face, the third 
joint six times as long as the second, arista thickened on the 
basal half, the penultimate joint slightly longer than broad; 
thorax gray pollinose, marked with four black vittae; scutellum 
bearing two pairs of long and one of short marginal, also a short 
apical pair, of nmcrochaeta 1 ; abdomen subshining, last three seg- 
ments thinly gray pollinose and with dark reflecting spots, the 
bristly hairs rather long, those in middle of dorsum suberect, 
second and third segments bearing only marginal macrochaetae; 
wings hyaline, third vein bearing two or three bristles near its 
base; calypteres white; middle tibiae each bearing two or more 
macrochaetae on the front side near the middle, hind tibiae evenly 
ciliate outwardly ; length, 7 mm. District of Columbia. A single 
female specimen bred from a Pyralid found upon oak. Type No. 
3622, U. S. National Museum pyralidis n. sp. 
Genus PROSPHERYSA v. d. W. 
ProsphertjHa van der Wulp, Biol. Cent. -Am., Diptera, Vol. II, p. 116; May, 1890. 
Dexiophana Brauer and Bergenstamui, Zweif. Kais. Mus. Wien, V, p. 374; 1891. 
Our single species is black, the apex of the proboscis and of the 
fourth segment of the abdomen, yellowish ; three postsutural and three 
sternopleural macrochaetae, scutellum bearing three pairs of long mar- 
ginal and a short apical pair, second and third segments of abdomen 
bearing discal and marginal, middle tibia* each bearing two on the 
front side near the middle; length, 9 mm. Anglesea, X. J. (Biologia 
Cent.-Amer., Diptera, Vol. II, p. 117; May, 1890.) . . .cemulans v. d. W. 
Genus VANDERWULPIA Town. 
J'anderwulpia Townsend, Trans. Amer. Ent. Soc, Vol. XVIII, p. 381; Dec, 1891. 
Our two species have the antennal arista thickened to the middle 
and clothed with a pubescence which at the most is only slightly longer 
than its greatest diameter; three postsutural macrochaetae: 
Abdomen reddish yellow; remainder of insect, except palpi and 
apex of proboscis, black; calypteres white, wings hyaline, 
anterior veins bordered with smoky, petiole of apical cell over 
one-half as long as the hind crossvein; length, 7 mm. Las 
duces, N. Mex. (Trans. Amer. Ent. Soc, Vol. XVIII, p. 381; 
December, 1891.) .atrophopodoides Town. 
Abdomen and entire insect except palpi and lower part of face, 
black, calypteres and Aviugs as in the preceding species, petiole 
of apical cell less than one-sixth as long as the hind crossvein; 
length, 10 mm. Texas. (Canadian Entomologist. Vol. XXIV, p. 
172; July, 1892.) sequem Tovm. 
