48 



THE CANADIAN ENTOxMOLOGIST 



as great a pest in the West as the destructive pea aphis is to peas 

 in the East. This aphidid has been received from Messrs. G. I. 

 Reeves, T. H. Parks, H. S. Smith, and E. J. Vosler, who collected 

 it on alfalfa at Salt Lake City, Utah. It has also been collected by 

 Mr. J. A. Hyslop on alfalfa at Pullman, Wash., May 25 and 26, 

 and June 4 and 9, 1909. 



Macrosiphum coryli. 

 Wingless viviparous female. (Fig. 12. — Plate II, figs. 5, 7.) 

 Head orange-red to brownish. Antennae black, excepting 

 segments I and II, which are concolorous with head; placed on 



Fig. 12. 



conspicuous frontal tubercles; sparsely hairy; very long, being 

 about one-half longer than the body; filament of segment VI the 

 longest; segment III with 3 or 4 circular sensoria in a row near the 

 base; segments V and base of VI with the usual distal sensoria. 

 Eyes dark red to reddish brown. Beak almost wholly black and 



