LIST OF HOMOPTEROUS INSECTS. 957 



acute ; tip of the second fork very near the the tip of the fourth 

 vein ; first and second veins almost straight, near each other at the 

 base, very far apart at the tips. 



Tlie winged male. Darker, much smaller, and more slender 

 than the female, and has a hroader head : feelers about half the 

 length of the body. 



England. 



39. Apbis costata. 



Aphis costata, Zett. Faun. Lapp. i. 559, 3. Ins. Lapp. 311, 4. 



Walk. Ann. Nat. Hist. Ser. 2, ii. 100, 38. 

 Aphis Abietis? Kirby and Spence, Intr. Ent. i. 451, iii. 182, 466 : 



iv. 171. 

 Lachnus fasciatus, Burm. Handb. Ent. ii. 93, 4. Kalt. Mon.Pflan. 



i. 160, 9. 

 Cinara Symphiti, Curt. Brit. Ent. 577. 

 Taeniolachnus, Amyot, Ann. Soc. Ent. Fr. 2tne Sirie, v. 481. 



Rib-vein approaching the fore border, and again receding much 

 from it beneath the brand, forming a very obtuse angle; brand 

 nearly as long as one-third of the wing ; first branch vein straight, 

 rather oblique, about five times farther from tlie second at the tip 

 than it is at the base ; second very oblique ; third obsolete in the 

 female, apparent but indistinct in the male, much nearer at its tip 

 to the first fork than to the second vein ; second fork long, not half 

 so far at the tip from the fourth vein as from the second fork ; fourth 

 vein long, slightly curved, straight in the male. 



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

 tiou. 



40. Aphis Lahicis. 



Aphis Laricis, Walk. Ann. Nat. Hist. Ser. 2, ii. 102, 39. 



Distance between the first and second veins at the base ahout 

 eight times that between them at the tips ; third almost twice far- 

 ther from the second at the tip than it is at the base, twice farther 

 from the second at the base than the second is from the first ; first 

 fork more than twice farther I'rom the third vein than from the se- 

 cond fork, nearer to the third vein than the third is to the second ; 

 second fork nearer to the fourth vein than to the first fork ; fourth 



PART IV. 3 P 



