956 LIST OF HOMOPTEKOUS INSECTS. 



fourth vein very slightly curved, nearly four times farther from the 

 rib-vein than from the second fork. 



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

 tion. 



37. Aphis Pineti. 



Aphis Pineti, Fabr. Sp. Ins. ii. 389, 40. Mant. Ins. ii. 317, 45. 



Ent. Syst. iv. 219, 45. Syst. Rhyn. 301, 45. Gmel. Ed. Syst. 



Nat. 1, 2207, 55. Turt. Syst. Nat. ii. 707. Latr. Gen. iii. 



173. St. Farg. et Serv. Enc. MM. x. 248. Zett. Faun. 



Lapp. i. 558, 2. Ins. Lapp i. 310, 2. Walk. Ann. Nat. Hist. 



Ser. 2, ii. 99, 36. 

 Aphis tomentosa Pini, Beg. Ins. iii. 39, 2, pi. 6, f. 19 — 33. 

 Lachnus Pineti, Hartig, Convers. Lexic. Germ. Zeit. iii. 368. 



Kalt. Mon. Pflan. i. 162, 12. 

 Pinetifex, Amyot, Ann. Soe. Ent. Fr. 2me Serie, v. 481. 



Distance between the first and second veins at the tips about 

 ten times farther than at the base ; third mostly obsolete, much 

 farther from the second at the tips than it is at the base ; very much 

 farther from the second at the base than the second is from the 

 first ; fourth vein almost straight, twice farther from the tip of the 

 rib-vein than from the nearest visible part of the third vein. 



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

 tion. 



38. Aphis Abietis. 

 Aphis Abietis, Walk. Ann. Nat. Hist. Ser. 2, ii. 100, 37. 



The viviparous wingless female. Elliptical, slightly convex, 

 somewhat powdered with white, with cross rows of little black dots 

 on the sutures between the segments : feelers pale yellow, slightly 

 hairy, hardly more than one-fifth of the length of the body ; tips 

 brown : mouth with a black tip : front convex : sides of the fore- 

 chest slightly notched. 



The viviparous winged female. Feelers about one-third of 

 the length of the body, angle near the tip of the wing-brand 

 more obtuse than that of A. Pinicola, but less so than that of A. 

 Pini, or of A. Pineti; fourth vein nearly straight; third vein 

 obsolete near its source, forked before one-third, and again be- 

 fore two-thirds of its length ; angles formed by these forks very 



