1, 1ST 01' IIOMOPTEUOUS INSKCTS. 939 



very long, nearly linear, equal to half the length of the rib-vein, 

 begins to widen gradually before the middle of the winp -. rib-vein 

 broad, approaching the fore border at the commencement of the 

 brand, afterwards diverging very slightly: it forms no angle at the 

 source of the fourth vein, and its length beyond the base of that 

 vein is more than the space between its tip and that of the fourth 

 vein, and the latter distance is nearly double tlie space between its 

 tip and that of ihe fourth vein and the tip of the third vein ; the space 

 between the first vein and the second at ihc tips is almost thrice that 

 at the base, and much more than half the space between the tip of 

 the first vein and the Imse of the wing ; the space of the third vein 

 between the forks is much shorter than that between the first fork 

 and the base, and as long as that between the second fork and the 

 tip of the wing; the space between the tip of the second fork and 

 the tip of tlie third vein is much less than that between the tip of 

 the second fork and the tip of the first Ibrk ; the third vein is not 

 obsolete till close to its source; fourth vein very slightly curved, 

 nearer to the tip of the rib-vein tlian to the second fork. 



« — c. England. (In Canada Balsam). From Mr. Walker's collec- 

 tion. 



Group 6. Walk. Ann. Nat. Hist. Ser. 2, 331. 

 8. Aphis Tili^. 



Aphis Tiliae, Linn. Si/st. Nat. ii. 734, 11. Faun. Stiec. 984. R6aum. 



Ins. iii. pi. 23, f. 8. Geoff. Ins. Par. i. 495, 6. Deg. Ins. iii. 



77, 12, pi. 5, f. 1—6. Leeuwenh. Letlr. 1 696, 293, 294. Frtsch. 



Ins. xi. 1, 3, pi. 17. Fabr. Sp. Ins. ii. 388, 34. Mant. Ins. ii. 



316,39. JSnt. Si/st. \v.2\S,S9. Si/st. Rhyn.2i)9,a0. Gmel. Ed. 



Sijst. Nat. i. 4, 2204, 1 1. Schrank, Faun. Boic. ii. 1, 117, 1223. 



Berk. Syn. i. 119. Slew. El. Nat. Hist. ii. 110. TuH. Sysl. 



Nat. ii. 707. Shaw, Gen.Znol. vi. 171,8, 1223. Lair. Gen. iii. 



173. St. Farg. et Serv. Enc. Mitli. x. 247. Burm. Handb. 



Enl. ii. 95, 6. Fonscol. Ann. Sue. Ent. Fr.x. 182, 25. Curt. 



Brit. Enl. 577. Sir Oswald Mostey, Gard. Citron, i. 684. Kail. 



Mon. P/lan. i. 129, 99. Rats. Forst. Ins. iii. 219, 22. Walk. 



Ann. Nat. Hist. Ser. 2, i. 331, 8. 

 Philyriptus, Amyot, Ann. Sac. Enl. Fr. 2»te Sh-ie, v. 479, 528. 



llib-vein very strong ; the space between it and the fore border 

 is coloured along the whole length, but is partly colourless towards 

 the tip ; it runs parallel to the border of the wing for more than two- 

 thirds of its length, then it slightly approaches the border and after- 



