LIST OF HOMOPTEROUS INSECTS. 935 



border very slight ; inclination of brand at its commencement be- 

 tween the vein and the border of the wing rather more abrupt than 

 that of the tip of the brand ; space between the first and second 

 branch-veins at the base one-third of that between them at the tips ; 

 third vein nearly parallel to the second vein, the distance between 

 them at the tips being hardly more than that at the base ; first fork 

 of the third vein at a little before one-third of its length, and its 

 second fork at one half of the length of its first fork ; the second 

 fork runs straight towards the tip of the wing, and does not follow 

 the curve of the fourth vein ; the tips of the two forks are rather more 

 distant from each other than the tip of the second fork is from the 

 tip of the third vein ; the fourth vein is much curved in the early 

 part of its course, but afterwards is nearly straight; the space 

 between its tip and that of the rib-vein is rather longer than the 

 space between its tip and the tip of the second fork. 



Var. Feelers with only six joints. Body pale yellow, with white 

 limbs : the tips of the joints of the feelers are brown ; the fourth 

 joint is much shorter than the third ; the fifth is brown, and less 

 than half the length of the fourth ; the sixth is rather longer than 

 the third. 



a—/. Scotland. Presented by E. Doubleday, Esq. 

 g — o. England. (In Canada Balsam). From Mr. Walker's col- 

 lection. 



2. Aphis Acerina. 

 Aphis Acerina, Walk, Ann. Nat. Hist. Ser. 2, i. 254, 2. 



First and second branch-veins of the fore-wings diverging from 

 each other, the distance between them at the tips is about thrice that 

 at the base ; first branch-vein about one-third more distant from the 

 source of the wing at the tip than at the base ; its tip much farther 

 from the base of the wing than from the tip of the second vein, and 

 about one-third farther from the tip of the second vein than the lat- 

 ter is from the tip of the third ; second vein slightly curved, nearer 

 to the third in the middle than at the base or at the tip, rather farther 

 from the third at the tip than at the base ; tip of the third vein more 

 apart from the tip of the second vein than from the tip Of the first 

 fork, and more apart from the tip of the first fork than the latter is 

 from the tip of the second fork ; tip of the second fork much nearer 

 to the tip of the fourth vein than to the tip of the first fork and than 



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