94 C. H. TYLER TOWNSEND. 



Ecliiiioinyia iteraiis Wlk. 



Two specimens from Constantine, Mich., August 24th — 31st; two 

 from Agricultural College, Mich. (Aldrich) ; twenty -eight from 

 Brookings, S. Dakota, May 27th — July 11th (Aldrich); nine from 

 New York, August 24th, only one specimen dated (Comstock) ; three 

 from Ontario, September 7th — 8th (Comstock) ; one from loAva 

 (Osborn) ; one from Colorado (Gillette) ; one from Illinois, June 

 (Westcott); and two from Ottawa, Canada (Harrington). Some 

 specimens are very much smaller than others. This is especially 

 noticeable in the S. Dakota specimens, six of which do not exceed 

 8 mm., and nine more are not over 9 mm. 



Ecliinoinyia dakoteiisis n. sp. %. — Eyes brown, frontal vitta dark 

 reddish brown, front about one-fourth width of head at vertex, much wider 

 before, sides of front shininj; black, more or less silvery pollinose, hairy: face 

 and cheeks yellowish, silvery white pollinose, sides of face hairy, but without 

 bristles; cheeks hairy; vibrissje inserted well above oral margin; antennse and 

 arista brown, first two antennal joints pale rufous, second antennal joint longer 

 than the elongate round third, second aristal joint elongate; proboscis decidedly 

 lontter than hight of head, slim, not fleshy, shining black beyond geniculation, 

 tip tawny; palpi rather long, moderately slender, not thickened at tip, rufous, 

 black bristly; occiput more or less silvery, thickly clothed with yellowish gray 

 hair. Thorax shining metallic black, slightly silvery anteriorly sometimes 

 showing the beginnings of two narrow vitlfe, scutellum rather broadly brownish 

 rufous on apical portion. Abdomen black, first segment more or less broadly on 

 sides behind, second broadly on sides, third more broadly on sides, and anal 

 wholly, except a median, more or less abbreviated vitta or marking, clear rufous; 

 first two segments with one or two lateral macrochsetse, and second with a median 

 marginal pair; third with about twenty marginal; anal with a marginal and 

 submarginal row; hypopygium exserted, rufous, black at base, black-hairy. 

 Legs black, femora bristly, tibiffi spiny; claws and pul villi elongate, claws 

 brownish or rufous, pulvilli yellowish white. Wings grayish hyaline, costal 

 and basal portions golden tawny ; apical cross-vein deeply bent in near origin, 

 hind cross-vein rather sinuate, almost parallel with internal border of wing; 

 tegulffi nearly white, with more or less of a yellowish tinge in some lights; 

 halteres tawny. Length of body 11.5—13 mm. ; of wing 9—9.5 mm. 



Described from three specimens; Brookings, S. Dakota (J. M. 

 Aldrich). 



I'upliocera ruficauda v. d. Wulp. 



I believe this species is only to be distinguished from C. viacrocera 

 Wd. by the color of the antennae. I have one specimen from Penn- 

 sylvania (Johnson) ; one from New York (Comstock) ; and three 

 from Brookings, S. Dak., June 4th— 11th (Aldrich). These have 

 tlie third antennal joint for the most part blackish. They all have 

 the apical cross-vein concave, and not more or le.ss convex as shown 



