CAN. ENT., VOL. I.I. 



Plate XX. 



B 



,,j»«»wf«x;.f< « 7»o!\-v: 







. I ' I irn 

 II 1,1 ,1 



13 



c 



M 



Myzus cynosbati Oestl. A, head; B, iiiiU'tiiia; C, cdrnicle; D, tip of coniick- iuiii:li cnlargod; E cauda; 

 V. side view of cauda: much enlarged, of winged viviparous female. Drawn from typa spjcim-n ;n 

 collection of Prof. O. W. Oestlund. 



Myzus houghlenensis Troop. G. cornicle; H, tip of cornicle much enlarged; I. cauda; J, antenna; 

 K, head; L, wing; and M, antennal hair, of winged viviparous female. Drawn from type slide 9919a in 

 the collection of The United Slates National Museum. 



