LIST OF HOMOPTEROUS INSECTS. 997 



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

 at the base than the second is from the first ; first fork nearer to the 

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

 third is to the second ; second fork nearer to the first fork than to 

 the fourth vein ; fourth vein curved, generally nearer to the second 

 fork than to the tip of the rib-vein. 



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

 tion. 



106. Aphis Humuli. 



Aphis Humuli, Schrank, Faun. Boic. ii. 110, 1199. Kalt. Mon. 



Pflan. i. 36, 24. Walk. Ann. Nat. Hist. Ser. 2, vi. 120, 98. 



Letters of Rusticus, 71. Plomtey, Nat. Hist. Hop-fly. 

 Aphis Pruni Mahaleb, Fonscol. Ann. Soc. Ent. Fr. x. 175, 15. 

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



Distance between the first and second veins at the tips much 

 more than twice that between them at the base ; third a little 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 fork than to the third vein, a little nearer to the third 

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

 fourth vein than to the first fork ; fourth vein much curved near the 

 base, almost straight towards the tip, very much nearer to the second 

 fork than to the tip of the rib -vein. 



Var. Pupa. Pale yellow, or red mottled with yellow, and 

 slightly tinged with black : feelers black, yellow towards the base: 

 tip of mouth black: nectaries pale yellow, with black tips, as long 

 as one-fourth of the body : legs very pale yellow ; tips of shanks 

 brown ; feet black. Middle of October. 



Var. Third vein wanting towards the tip. 



Var. Part of the first fork wanting ; the stump forming an un- 

 usually acute angle with the second fork. 



Var. First fork wanting towards the tip. 



Var. Third vein wanting towards the tip ; the stump forming 

 an unusually acute angle, with the first fork. 



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

 tion. 



3 s 3 



