14 THE CANADIAN ENTOMOLQGIST. 



black is partly obscured by yellow pollen, segments 2, 3 and 4 each with 

 one cross-band of moderate width, situated somewhat nearer the base of 

 the segment, the band on segment 2 is interrupted at the middle, and 

 does not reach the margin, while the others are entire, and attain tlie 

 lateral margin. The extreme posterior margin of segment 2 is shining, 

 and also the lateral margins^ leaving an H-shaped velvety-black area ; 

 segments 3 and 4 are velvety-black in front of the cross-band and shining 

 behind it. Hypopygium shining black. Venter with yellow cross-bands 

 on segments 2 and 3. Femora black except narrowly at the knees ; tibise 

 yellow, with a dark spot on distal half; the front and middle tarsi have 

 the basal joints yellow and the distal joints dark, the posterior tarsi are 

 dusky, with the distal joints darker. Halteres yellow. Wings brownish, 

 especially toward the costal border. 



I.,ength, 13 mm. (nasica = refernng to the nose). 



Described from a single specimen taken in the Hope Mts., July 27, 

 1906, by Mr. R. S. Sherman. 



To include the new species of Sphecomyia, I have amended Willis- 

 ton's table (Synopsis N. A. Syrphidje, p. 257) as follows: 



1. Antennae very long, third joint short vittata. 



Antennse shorter than head : 2. 



2. Scutellum yellow at base ; a complete black facial stripe from antennae 



to oral margin 3. 



Scutellum entirely black ; facial stripe wanting in male (there is in the 

 female oi occidejitalis a stripe which is attenuated at both ends) . . 4. 



3. Yellow cross-bands of abdomen very broad brevicornis. 



Cross-bands narrow Pattoni. 



4. Abdominal segments 2 to 4 each with two yellow 



cross-bands occidentalis. 



Abdominal segments with only one yellow cross-band iiasica. 



ARGYNNIS ASTARTE, DOUBL.-HEW. 



BY HENRY SKINNER, M.D., PHILADELPHIA. 



This was the butterfly we did not get. Dr. James Fletcher and the 

 writer arrived at Lake Louise, in the Rocky Mountains of Alberta, on the 

 second day of August. One of the insects we were most anxious to 

 obtain was Argy?mis astarte, described in 1848, and not rediscovered 

 until 1888. Dr. Fletcher said Mr. Bean had taken the species on the 



