314 PROCEEDINGS OF THE ACADEMY OF [1895. 



Thorax black, yellowish pollinose, not distinctly black vittae; three 

 postsntural macrochaetae and three sternoplenral ; scutellum yellow, 

 bearing two long marginal pairs of macroehaetae. Abdomen shining 

 yellow, a black spot below the hind angles of the third and fourth 

 segments; a dorsal vitta and the apex tinged with reddish; first 

 segment destitute of dorsal macroehaetae, the second with a marginal 

 pair, third and fourth each with a marginal row. Legs yellow, 

 tarsi black, pulvilli as long as the last tarsal joint. Wings yellowish 

 hyaline, third vein bearing about five bristles at the base, the others 

 bare; hind cross vein at two- thirds the distance from the small cross- 

 vein to the bend, which is rounded; costal spine minute. 



9 same as the $ with these exceptions: Front three-fourths as 

 wide as either eye, vitta scarcely half as wide as either side of the 

 front, two pairs of orbital bristles, three frontal bristles in each row 

 directed backward, antennae three-fourths as long as the face, the third 

 joint twice as long as the second, palpi nearly one and one- half times 

 as long as the antennae, pulvilli scarcely half as long as the last 

 tarsal joint. 



Length 6.5 mm. Jacksonville (W. H. Ashmead), and Juniper 

 Creek (C. W. Johnson), Florida; and Ithaca, N. Y. (F. H. Chit- 

 tenden). One male and three females. One of the latter has a 

 dorsal black spot at the apex of the second and third abdominal 

 segments. 

 Prosenoides flavipes u. sp. 9 • 



Black, the antennae except at apex, palpi, femora and tibiae 

 yellow. Front at vertex nearly as broad as either eye, vitta dark 

 brown, next the antennae yellowish-gray, at this point three-fourths 

 as wide as either side of the front, the latter light gray pollinose; 

 two pairs of orbital bristles; frontal bristles descending to insertion 

 of antennae, two in each row curving backward; antennae three- 

 fourths as long as the face, third joint three times as long as the 

 second; sides of face and the ridges bare, keel in middle of the 

 depression one-half higher than width of third autenual joint; 

 cheeks scarcely one-fifth as broad as the eye-height, bare except 

 on lower edge; proboscis slender, rigid, beyond the basal 

 articulation slightly longer than the head and thorax united, 

 labella scarcely thicker than the proboscis, palpi clavate, 

 slightly shorter than the antennae. Thorax marked with 

 three broad, brownish black vittae; three postsutnral macroehaetae, 



