978 LIST OF HOMOPTEROUS INSECTS. 



from the second at the tip than it is at the base, a little farther 

 from the second at the base than the second is from the first; 

 first fork nearer to the second fork at the tip than it is to the third 

 vein, and much nearer to the third vein than the third is to the se- 

 cond ; second fork as near to the fourth vein as to the first fork ; 

 fourth vein slightly curved, farther from the tip of the rib-vein than 

 from the second fork. 



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

 tion. 



75. Aphis tetraehoda. 



Aphis tetrarhoda, Walk. Ann. Nat. Hist. Ser. 2, iv. 42, 67. 



Distance between the first and second veins at the base more 

 than half that between them at the tips ; third vein very much 

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

 to the second at the base than the second is to the first ; first 

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

 much nearer to the third vein than the third is to the second ; 

 second fork nearer to the fourth vein than to the first fork ; fourth 

 vein much curved near the base, straight towards the tip, a little 

 farther from the tip of the rib-vein than from the first fork. 



a— I. England. (In Canada Balsam). From Mr. Walker's col- 

 lection. 



76. Aphis Cerasi. 



Aphis Cerasi, Fabr. Syst. Ent. 734, 4. Sp. Ins. ii. 384, 5. Mant. 



Ins. 315,6. Ent. Syst. iv. 211, 6. Syst. Rhyn. 295, 6. Gmel. 



Ed. Syst. Nat. i. 2203, 39. Schrank. Faun. Boic. ii. 1 . Mull. 



Zool. Dan. Prod. 110, 1256. Rossi, Faun. Etrusc. 260, 1369. 



Stew. El. Nat. Hist. ii. 1 10. Turt. Syst. Nat. ii. 703. Fonscol. 



Ann. Soc. Ent. Fr. x. 179, 12. Luxford, Entomologist, 159, 40. 



Sir Oswald Mosley, Gard. Chron. i. 628. Kalt. Mon. Pflan. i. 



45, 31. Ratz. Forst. Ins. iii. 216, 3. Walk. Ann. Nat. Hist. 



Ser. 2, iv. 43, 68. Fitch, The Senate, No. 30, 65. 

 Cerasaphis, Amyot, Ann. Soc. Ent. Fr. 2me Serie, v. 477. 



Distance between the first and second veins at the base hardly 

 more than one- third of that between them at the tips ; third farther 

 from the second at the tip than it is at the base, a little farther from 



