942 LIST OF HOilOPTEROUS INSECTS. 



Var. No first fork in one wing. 



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

 tion. 



10. Aphis Juglandina. 



Apbis Juglandina, Walk. Ann. Nat. Hist. Ser. 2, i. 335, 10. 



Rib-vein approacliiDg tbe fore border, then receding from it, 

 and forming an obtuse angle, whose outward side is not more 

 than half the length of the inward one ; first branch-vein very 

 slightly oblique, hardly curved outward, twice farther more re- 

 mote from the second at the tip than it is at the base ; second 

 oblique, slightly undulating ; third very slightly undulating, more 

 oblique than the second, nearer to the second at the base than the 

 second is to the first, and the space between the latter at the tips is 

 almost twice that between the second and third ; first fork at the 

 tip as uear to the second fork as to the third vein, and nearer than 

 the third vein is to the second vein ; space between the forks a little 

 less than that between the second fork and the fourth vein, but more 

 than that between the fourth vein and the rib-vein ; fourth vein 

 rather short, much curved along its whole length. 



England. 



11. Aphis Coryli. 



Aphis Coryli, Gotze, Ent. Beitr'dge, ii. 311. Gmel. Ed. Syst. Nat. 

 . i. 4, 2210, 69. Kalt. Mon. PJlan. i. 98, 73. Walk. Ann. Nat. 

 Hist. ^er. 2, i. 336, 11 . 

 Corylaphis, Amyot, Ann. Soc. Ent. Fr. 2me Serie^ v. 479. 



First branch-vein nearly perpendicular ; second slightly undu- 

 lating, much more oblique ; the distance between them at the base 

 about one-third of that between them at the tips ; third vein more 

 oblique than the second, their mutual distance at the tips about 

 twice that at the base, and nearly equal to the distance between the 

 tips of the third and of its first fork ; second fork fonning a less 

 acute angle than the first, as long as one-third of the third vein ; 

 fourth vein much curved along its whole length. 



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

 tion. 



