1024 LIST OF HOMOPTEBOUS INSECTS. 



240. Aphis picta. 



Aphis picta, Walk. Zool. vii. App. xlvii. 



a — d. England. Presented by J. Hardy, Esq. 



241. Aphis impacta. 



Aphis impacta, Walk. Zool. vii. App. xlviii. 



Distance between the first and second veins at the base more 

 than twice that between them at the tips ; third farther from the 

 second at the tip than at the base, farther from the second at the 

 base than the second is from the first ; first fork a little nearer to the 

 second than to the third vein, nearer to the third vein than the 

 third is to the second ; second fork generally as near to the fourth 

 vein as to the first fork ; fourth vein much curved near the base, 

 almost straight towards the tip, much nearer to the second fork than 

 to the tip of the rib-vein. 



a—c. England. Presented by J. Hardy, Esq. 



242. Aphis exul. 



Aphis exul, Walk. Zool. vii. App. xlviii. 



Distance between the first and second veins at the tips much 

 more than twice farther than at the base ; third much farther 

 from the second at the tip than at the base, as near to the se- 

 cond at the base as the second is to the first; first fork much 

 nearer to the second fork than to the third vein, very little nearer to 

 the third vein than the third is to the second ; second fork a little 

 nearer to the first fork than to the fourth vein ; fourth vein more or 

 less curved, much nearer to the second fork than to the tip of the 

 rib-vein. 



a—f. England. Presented by F. Walker, Esq. 



243. Aphis advena. 



Aphis advena, Walk. Zool. vii. App. xlviii. 

 England. 



