SYNOPSIS OF NORTH AMERICAN SYRPHIDiE. 22.> 



second aud third segments each with a broad posterior opaque black 

 band, with a slender median anterior extension to the front margin. 

 Pile light yellow, long on the sides. Legs black ; knees and basal joints- 

 of the tarsi yellow; hind femora much thickened, not arcuate; hind 

 tibiae arcuate, considerably shorter than the femora. Wings nearly 

 hyaline, with brownish clouds on the middle cross-veins. 



Une specimen, Colorado (Xational Museum, Professor Kiley's collec- 

 tion). 



It is very possible that this is the male of B. Rilcyi, but the metallie 

 coloring of the body and the color of the legs make it doubtful. 



Brachypalpus sorosis, u. sp. 



Ha b itat. — Georgia ! 



S . Length, 12™™. Frontal triangle and face yellow. Antennae 

 yellowish red. Cheeks black. Dorsum of thorax shining metallic 

 bronze, with erect, rather abundant light yellow pile. Humeri yellow- 

 ish red. Pleural black, in the middle with light yellow pile. Scutellum 

 like dorsum of thorax. Abdomen on the dorsum shining metallic 

 bronze, with opaque black cross-bands; tirst segment black in fiont, 

 the second segment Avith a broad band in front, and another, a cresccr.tric 

 one (the broadest) behind; third segment with a slender one on the an- 

 terior margin, behind the middle with a narrow anteriorly arcuate one; 

 pile erect, rather abundant, light yellow. Legs, including the trochan- 

 ters, reddish yellow, with nearly white pile ; tip of tarsi blackish. Wings^ 

 brown in front, subhyaline behind. 



Une specimen in Xational Museum (Professor Riley's collection)^ 

 labelled "S. Georgia, Morrison." The species very strongly resembles 

 C. pulcJier, but it seems distinct in the pile of the thorax, and the color 

 of the legs and wings. 



Brachypalpus pulcher . ( Plate X, figs. 9, 9a. ) 



Brachypalpus pulclier Williston, Can. Ent., xiv, 79. 



CaUiprohola a^rea Bigot, Annales Soc. Ent. de France, 1883, p. 352. 



Habitat. — Oregon, Washington Territory! 



5,9. Length, V2 to 16™"'. Face yellow, with black cheeks, and with 

 or without blackish or brown median stripe, shining in the middle, pol- 

 linose on the sides. Frontal triangle of the male yellow or brownish; 

 IVont in female black, rather narrow, a little broader below, yellowish 

 pollinose on the sides ; piles short, fuscous. Antenn<« yellowish brown 

 or blackish, third joint of a lighter color near the base below. Dorsum 

 of thorax and scutellum black, with a bluish or partly metaUic reflec- 

 tion, or, in better preserved specimens, a metallic bronze ; humeri aud 

 a slender interrupte<l band on the suture yellowish-whitish pollinovse; 

 the pile of the dorsum more blackish, on post-alar callosities, scutellum 

 and pleune, yellow. Abdomen of a brilliant golden or bluish-bronze, with 

 short golden })ileand oi)aque blar-k markings as follows: tirst segment, 

 except the sides, in the female, in the male the hind border also shining j 



