117 



obliterated in front of tln^ middle by the meeting' of the sides of 

 the front, frontal bristles desceuding to tlie 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 tlie 

 lower three-fourths, antennae almost as long as the face, the third 

 Joint six times as long as the second, arista thicliened on tlie 

 basal half, the penultimate Joint slightly longer than broad; 

 thorax gray pollinose, marked with four black vitta'j scntellum 

 bearing two pairs of long and one of short marginal, also a short 

 apical pair, of macrochfeta;; abdomen subshining, last three seg- 

 ments thinl}^ gi'i^y pollinose and with dark reflecting spots, the 

 bristly hairs rather long, those in middle of dorsum suberect, 

 second and third segments bearing only marginal macrochiBtie; 

 wings hyaline, third vein bearing two or three bristles near its 

 base; calypteres white; middle tibiie each bearing two or more 

 macrocha^tie on the front side near the middle, hind tibiiie evenly 

 ciliate outwardly; length, 7 mm. District of Columbia. A single 

 female specimen bred from a Pyralid found iTpon oak. Type N^o. 

 3622, U, S. National Museum pyralidis n. sp. 



Genus PROSPHERYSA v. d. W. 



Prosjjheri/fia yun der Wulp, Biol. Cent. -Am., Uiptera, Vol. II, p. 116; May, 1890. 

 Dexiophana Braner and Beijienstanim, Zweif. Kais. Mns. Wien, \, 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 macroclm^ta^, scntellum 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 ou the 

 front side near the middle; length, 9 mm. Anglesea, N. J. (Biologia 

 Cent.-Amer., Diptera, Yol. 11, p. 117; May, 1890.) . . .(vmulans v. d. W. 



Genus VANDERWULPIA Town. 



Vandericnlpia Townsend, Trans. Amer. Ent. Soc, Vol. XVIII, }). 381; Deo., 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 macrocha'ta^ : 



Al)domen reddish yellow; remainder of insect, except palpi and 

 apex of proboscis, black; caly])teres white, wings hyalino , 

 anterior veins bordered Avith smoky, i)etiole of apical cell over 

 one-half as long as the hind cros.svein ; length, 7 mm. Las 

 Cruces, N. Mex. (Trans. Amer. Ent. Soc, Vol. XVIII, p. 381; 



December, 1891.) afrophopodoides Town. 



Abdomen and entire insect except palpi and lower part of face, 

 black, caly])teres and wings as in the i)receding 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, 1S92. ).k>ru'. ijf /.u. . Aj>fi.)zt.^. ./3.4J. i-/. . .sequem Town. 



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