252 Annals Entomological Society of America [Vol. XV, 



brownish; third antennal joint oval, larger than in the male; markings 

 on thorax more distinct; abdominal markings a little broader, the 

 median stripes complete. Legs a little darker, wings with more distinct 

 clouds. 



In some specimens the terminal segments may appear brownish. 

 This condition is not natural, but is caused by internal organs, or 

 staining. 



B. notata has been reported in Canada from Ottawa, Ont. 

 I have a male before me from Ottawa, a male from Vancouver, 

 B. C, a pair from Orono, Maine, and a pair from White 

 Mountains, N. H. Likely to be confused only with perplexa, 

 from which it is readily distinguished by its pale thorax, more 

 distinctly maculated wings, etc. The male from British 

 Columbia appears to be teneral, and the median stripes are 

 very faint, practically wanting and the fourth segment has no 

 brown hind margin, but the sides are narrowly brownish. The 

 color is a little paler yellow, but darker than in most specimens 

 oi flavescens , from which it is readily distinguished by the larger 

 scutellum and distinctly plumose arista. 



Brachyopa gigas Lovett. 



The largest known species in the genus; arista very distinctly 

 plumose; thorax ferruginous yellowish; abdomen of same color, with 

 four darker stri]ies. 



Length, 10 mm. Male. Face and front yellow, whitish pollinose, 

 the cheeks and the greater part of the frontal triangle, shining, darker; 

 face produced downwards and forwards. Antenna; reddish yellow, 

 third joint elongate oval, flattened above on the apical third or more, 

 making the end appear more pointed below; arista brown, its base 

 yellow, short, sparse plumose, but longer than in other species. Vertical 

 triangle brown, with mixed yellow and brown pollen and short brown 

 pile; occiput shining below, gray pollinose above, and with light colored 

 pile. Eyes touching for moderate distance. Thorax ferruginous 

 reddish, with a median double stripe and an interrupted stripe on each 

 side, reaching quite to the scutellum, more brownish; a brown spot 

 behind the front coxae. vScutellum concolorous with thorax. Pile 

 of the thorax and scutellum black, across the front between the humeri 

 and the sides of the dorsum and corners of the scutellum with yellow 

 pile Abdomen ferruginous reddish, all the segments with brownish 

 posterior margins, and the lateral margin entirely narrowly bordered 

 with shining brown; second to fifth segments with an elongate median 

 dash in front, brownish. Legs yellowish brownish, the last two tarsal 

 joints brown. Wings yellowish in front, the stigma yellow. 



Originally described from Washington State from a single 

 male. According to Lovett and Cole there are several specimens 



