LIST OF HOMOPTEROUS INSECTS. 991 



Distance between the first and second veins at the tips about 

 thrice that between them at the base ; third very much farther from 

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

 at the base than the second is from the first ; first fork as near to 

 the seccond fork as to the third vein, nearer to the third vein than 

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

 as to the first fork ; fourth vein generally a little nearer to the 

 second fork than to the lip of the rib-vein. 



Var. ? Black, very small : abdomen yellow : feelers a little 

 longer than the body : mouth pale yellow with a black tip : nec- 

 taries short : legs pale yellow, moderately long ; feet and tips of 

 thighs and of shanks black : wings colourless, njuch longer than 

 the body ; wing-ribs and rib-veins pale yellow ; brands and branch- 

 veins pale brown. In the beginning of October on Thalictrum. 



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

 lection. 



94, Aphis Viburni. 



Aphis Viburni, Fahr. Syst. Ent. 737, 18. Sp. Ins. ii. 386, 23. 

 Mant. Ins. ii. 316, 28. Ent. Si/st. iv. 216, 28. Syst. Rhyn. 

 298, 28. Scoj). Ent. Cam. 396. Gmel. Ed. Syst. Nat. i. 2208, 

 57, Suiz, Ins. pi. 11, f. I, 2. Steiv. El. Nat. Hist. ii. Jll. 

 Enc. Meth. Ins. pi. 115, f, 9, Schrank, Faun. Boic. ii. Ill, 

 1203. Sulzer, Hist. Ins. pi. 11, f. 1,2. Kalt. Mon. Pflan. 

 i. 78, 56. Sir Oswald Moslei/, Gard. Chron. i. 684. Rusticus, 

 Ent. Mag. i. 218. Walk. Ann. Nat. Hist. Ser. 2, vi. 41, 86. 



Viburnifex, Amyot, Ann. Soc. Ent. Fr. 2me Serie, v. 478. 



Distance between the first and second veins at the tips more 

 than twice that between them at the base : third a little nearer to 

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

 the base than the second is from the 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 a little nearer to the fourth vein than 

 to the second fork ; fourth vein curved, farther from the tip of the 

 rib-vein than from the second fork. 



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

 tion. 



