LIST OF HOMOPTEROUS INSECTS. 997 



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 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. 



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



Letters of Rusticus, 71. Plomlei/, Nat. Hist. Hop-fiy. 

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

 Humulifex, Amj/ot, 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 



