996 LIST OF HOMOPTEEOUS INSECTS. 



The viviparous winged female. Elliptical and dark brown while 

 a pupa : feelers as long as the body : nectaries as long as one-sixth 

 of the body: rudimentary wings pale green. Black, or very dark 

 green, when the wings are unfolded : abdomen dark red : feelers 

 shorter than the body : mouth tawny, with a black tip : nectaries 

 black, as long as one-fifth or one-sixth of the body : legs tawny ; 

 posterior thighs, excepting the base, feet and tips of shanks black ; 

 legs sometimes black ; shanks and fore-thighs, excepting their tips, 

 of a yellow hue : wings colourless, much longer than the body ; 

 wing-ribs pale yellow ; brand pale brown ; veins brown. In the 

 middle of June the wingless insect and the pupa vary much in co- 

 lour ; sometimes they are dull pale yellowish green, sometimes 

 bright red, or dark reddish gray ; sometimes the ieelers are white, 

 with a black lip to each joint, or black towards the lips, and more 

 than half the lengih of the body : mouth vvhite, with a black tip : 

 legs white ; feet and tips of thighs and of shanks black : oviduct 

 black and short. 



a — O.England. (In Canada Balsam). From Mr. Walker's collec- 

 tion. 



104. Aphis Beeberidis. 



Aphis Berberidis, Kalt. Mon. PJlan. i. 95, 70. Walk. Ann. Nat. 

 Hist. Ser.2, vi. 118,96. 



Distance between the first and second veins about twice farther 

 at the tips than it is at the base ; third a little farther from the se- 

 cond at ihe lip than it is at the base, as far from the second at the 

 base as the second is from the first ; first fork at ihe tip very much 

 nearer to the second fork than to the third vein, as near to the third 

 vein as the third is to the second ; second fork much nearer to the 

 first fork than to the fourth vein; fourth vein much curved, straight 

 near the lip, generally a little nearer to the second fork than to the 

 tip of the rib- vein. 



a — V. England. (In Canada Balsam). From Mr. Walker's collec- 

 tion. 



105. Aphis Nastdetii. 



Aphis Nasturtii, Kalt. Mon. PJlan. i. 76, 54. Walk. Ann. Nat. Hist. 

 Ser. 2, vi. 119,97. 



Distance between the first and second veins at the tips much 

 more than twice that between them at the base ; third much farther 



