SYNOPSIS OF NORTH AMERICAN SYRPIIID^. 171 



base of bind tMiv, feinorn, and the lar;;er portion of tlie tarsi yellow ; 

 more rarely the front and middle legs may be almost wholly yellow and 

 the black confined to outer part of hind femora, lip of hind tibite, and 

 tip of all the tarsi. Wings hyaline, the basal portion a little yellowish. 

 I have examined a large number of specimens of this species collected 

 mostly in New England, and believe the synonyms as given to be correct. 

 Small specimens corresponding to pumihis were taken late in October, 

 and, upon first sight, certainly seemed a different sj^ecies, but a further 

 study showed the impracticability of separating them from the more 

 typical transversus. Altogether I have examined about 75 specimens, 

 collected from Canada to Florida. 



Eristalis viuetorum. (Plate VII, fig. 8a.) 



Si/rphus vineiorum Fabricius, Ent. Syst., Suppl., 562. 



i:ristalis vinetorum FahTicins, Syst. Antl., 235, 13; Wiedemann, Auss. Zw. Ins., 



ii, 163, 15; Macquart Dipt. Exot., ii, 2, 41, 16. 

 Eriatalis trifasciatus Say, J. Acad. Phil., vi, 165 ; Compl. Wr., ii, 359. 

 Eristalis uvarum Walker, List, etc., iii, 623. 

 Eristalis tlioracicus Jaenuicke, Neue Exot. Dipt., 91. 



HaUiat.—Gnh-A, Florida, Georgia, Mexico!, Indiana (Say), Pennsylva- 

 nia (O. S.), Brazil (Schiner). 



^ , 9 . Length, 11 to 14'"'". Antenn?e reddish-yellow ; arista bare. Face 

 reddish-yellow; on the sides with whitish pollen and pile; the median 

 stripe and cheeks shining, more or less brownish. Frontal triangle, like 

 the face, clothed wholly with white pile; front in female narrow above, 

 more yellowish than the face, in the middle with a brownish stripe; 

 above with blackish pile near the ocelli, below yellowish-white. Dorsum 

 of thorax opaque black, with three distinct grayish-olivaceous fasciae, 

 the first on the front border, the second just before the suture, and the 

 third, the broadest, just in front of the scutellum, the intervals between 

 them crescentric; pile short, yellowish; i)leurie grayish pollinose. Scu- 

 tellum reddish-yellow, lighter along its border. Abdomen in the male 

 as follows : first segment black, on the si<les reddish-yellow; second seg- 

 ment with large lateral spots, not reaching the hind border, the opaque 

 black very narrow between the tips of the side spots, broader in front, 

 and reaching across the segment in front of the narrow yellow hind bor- 

 der; third segment with a large spot in fronton the sides, usually more 

 reddish, and a narrow yellowish hind border ; across the middle a shining 

 entire band, leaving an opaque black spot in front and a similar colored 

 fascia behind; fourth segment with a shining cross-band in front, opaque 

 behind, posterior border more broadly yellow; hypopygium shining black. 

 In the female the yellow spots on the third segment are usually smaller 

 or wanting. Pile on the opaque portions black, elsewhere yellowish. In 

 some specimens the abdomen is ferruginous on the shining parts, and the 

 opaque portions of a deeper color. Legs: anterior and middle pairs yel- 

 lowish or reddish, the base of femora and tip of tibiae brownish, hind fem- 

 ora considerably dilated, usually broadly blackish, sometimes deep red, 



