966 LIST OP HOMOPTEROUS INSECTS. 



very much nearer to the second fork than to the tip of the rib- 

 vein. 



Var. First fork nearer at the tip to the second fork than to 

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

 fork. 



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

 b — v. England. (In Canada Balsam). From Mr. Walker's collec- 

 tion. 



57. Aphis UlmarijE. 



Aphis Ulmariae, Schrank, Faun. Boic. ii. Ill, 1221. Walk. Ann. 



Nat. Hist. Ser. 2, ii. 421,49. Zool. vii. App. liii. 

 Aphis Onobrychis, Fonscol. Ann. Soc. Ent. x. 169, 9. 

 Aphis Lathyri, Sir Oswald Mosley, Gard. Chron. i. 684. 

 Aphis Pisi, Kalt.Mon. Pflan. i. 23, 11. 

 Aphis Pisum, Harris, Exposit. Engl. Ins. 66, pi. 17, f. 10 — 12. 



Distance between the first and second veins at the base less 

 than half that between them at the tips ; third a little farther from 

 the second at the tip than at the base, a little 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, a little 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 much curved near the base, 

 straight towards the tip, almost twice farther from the tip of the rib- 

 vein than from the second fork. 



Var. Third vein a little nearer to the second at the base than 

 the second is to the first. 



Var. The viviparous wingless female. — Grass-green, nearly 

 spindle-shaped, rather long and narrow, convex, smooth, slightly 

 shining : feelers pale yellow, longer and much longer than the 

 body ; tips of the third and fourth, and the whole of the latter 

 joints brown, or with the tips of all the joints and the whole of the 

 seventh joint brown : mouth pale yellow or pale green, with a black 

 or brown tip : nectaries like the mouth in colour, as long as one- 

 fourth or as one-fifth of the body : legs pale green or pale yellowish 

 green ; knees, feet and tips of shanks brown or black. 



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

 b — m. England. Presented by F. Walker, Esq. 

 n—bb. England. (In Canada Balsam). From Mr. Walker's col- 

 lection. 



