SYNOPSIS OF NORTH AMERICAN SYRPHID^. 119 



snbcinerescent, all the veins, except the last segment of the fourth 

 vein, broadly clouded with black, confluent near the costa. Face yel- 

 low, obscure on the sides, with opaque yellowish pollen. — Translation. 

 Two male specimens from Professor Kiley without locality (No. 

 485, June 2, 1880,) evidently belong to this species. The front, how 

 ever, lacks the yellow spots above the antennae. The face in profile is 

 narrow, only a little widened at the tubercle, nearly perpendicular and 

 straight above it, and very receding below, the cheeks linear, and the 

 eyes very convergent below. The meso-pleurse are whitish pollinose, as 

 well as below. The legs are yellowish, the end of all the femora, the 

 end of front and middle tibiae, and nearly all of the hind tibia?, and all 

 of the tarsi, brown. The small cross-vein is a little beyond the middle 

 of the discal cell, and rectangular; the clouding of the wings along the 

 veins, brown. 



Baccha fuscipennis. (Plate IV, fig. 8.) 



Bacchafuscipennis Say, J., Acad., Phil., iii, 100; Compl. Wr., ii, 86. 

 OcijjHnmus fascipennis Macquart, Hist. Nat. Dipt., i, 554, 2; tab. xii, fig. 13; T. d. 



VVnlp, Tijds. v. Eut., xxvi, 9. 

 Syiphus Amissas Walker, List, etc., iii, 589. 

 Siirphiis L'adaca Walker, List, etc., iii, 590. 

 Ocyptuwus longivenlris Loew, Centiir., vii, 6H. 

 Ocuptamus fuscipennis Osten Sackeu, Cat. Dipt., 127. 

 f Ociiptamus conformis Loew, Centuf., vii, 67. 



Habitat— "Sew England, Florida, San Domingo, Kansas,! Guade- 

 loupe (v. d. Wulp). 



5,9. Length, 9 to 11™™. Antennae situated near the middle of the 

 head in profile ; black, the first two joints and the third below some- 

 times reddish or yellowish. Frontal triangle considerably longer than 

 the contiguity of the eyes, wholly bronze-black with black pile; front 

 in the female very narrow at the vertex, greenish-black, attenuated 

 above the antennae by the yellow of the face, which extends up along 

 the eyes nearly to the middle of the front. Face nearly perpendicular, 

 very gently concave below the antennae to the tubercle, thence reced- 

 ing to the oral margin ; yellow, on the sides whitish ; cheeks linear, 

 eyes convergent below. Thorax bronze-black, moderately shining, with 

 two very taint, slender, less shining stripes ; scutellum of the same 

 color, not infrequently somewhat reddish. Pleurae whitish pollinose. 

 Abdomen slender, only a little widened behind, in the male opaque 

 black, sometimes faintly purplish, the first segment and sides of the 

 second to beyond the middle, the narrow hind margin of the second, 

 third, and fourth, and the remainder of the abdomen, shining, some- 

 what metallic; fifth segment scarcely longer than broad in both 

 sexes; iu the female the abdomen is broader throughout, shining red- 

 dish, especially on the front part of the second— fifth segments, the 

 posterior portion more brownish or even blackish. Legs yellowish ; 

 the tip of the hind femora, and sometimes the tip of the front and 

 middle femora, the tip of front and middle tibiae, and nearly all of the 



