LIST OF HOMOPTEROUS INSECTS. 955 



35. Aphis Pini. 



Aphis Pini, Linn. Syst. Nat. ii. 736, 25. Faun. Suec. 994. Fair. 



Mant.Ins.n. 317,44. Sp. Ins. ii. 389, 39. Ent. Syst. iv. 



219, 44. Syst. Rhyn. 300, 44. Gmel. Ed. Syst. Nat. i. 2207, 



25. Rossi, Faun. Etrusc. 264, 1396. Stew. EL Nat. Hist. ii. 



110. Turt. Syst. Nat. ii. 707. Panz. Faun. Ins. Germ. xcv. 



17. De la Rue, Ent. Forestiere. Latr. Gen. iii. 173. Kirbyand 



Spence, Intr. Ent. i. 325. St. Farg. et Serv. Enc. MSth. x. 



247. Fonscol. Ann. Soc. Ent. x. 186, 28. Walk. Ann. Nat. 



Hist. Ser. 2, ii. 96, 34. 

 Aphis Pini maritimae ? Lion Dufour, Ann. Sci. Nat. iv. 243. 

 Aphis nuda Pini, Deg. Ins. iii. 27, pi. 6, f. 9, 1—16. 

 Lachnus Pini, Hartig, Germ. Zeit. iii. 368. Kalt. Mon. Pflan. i. 



155, 8. 

 Pityaphis, Amyot, Ann. Soc. Ent. Fr. 2me Serie, v. 481. 



Distance between the first and second veins at the base not 

 more than one-eighth of that at the tips ; third twice farther from 

 the second at the tip than at the base, more than tw.ice farther from 

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

 the tip much nearer to the second fork than to the third vein, very 

 much nearer to the third vein than the third is to the second ; se- 

 cond fork a little nearer to the fourth vein than it is to the first 

 fork ; fourth vein almost straight, about four times farther from the 

 tip of the rib- vein than from the second fork. 



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

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

 tion. 



36. Aphis Pinicola. 



Lachnus Pinicola, Kalt. Mon. Pflan. i. 154, 7. 



Aphis Piniphila, Ratz. Forst. Ins. iii. 219, 26, pi. 11, f. 5. 



Aphis Pinicola, Walk. Ann. Nat. Hist. Ser. 2, ii. 98, 35. 



Distance between the first and rib-veins at the base less than one- 

 eighth of that between them at the tips ; third much farther from the 

 second at the tip than it is at the base, about thrice farther from 

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

 at the tip very much nearer to the second fork than to the third 

 vein, much nearer to the third vein than the third is to the second ; 

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



