BRITISH APHIDES. 



V 



9 



a 



LACHNINiE. 



Upper wing with 

 twice-forked cu- 

 bitus ; under 

 wing with two 

 oblique veins. 



Antennae with 6 

 joints. 



SCHIZONEUEIN^. [ 



Cubitus once | 



forked. Lower •{ 

 wings with two I 

 oblique veins. 



r 



PeMPHIGINjE. 



Cubitus not 



forked ; lower 

 wings with one | 

 or two oblique | 

 veins. -\ 



Cubitus once 



forked ; lower 

 wine: with one 



oblique vein. 



GENERA. 



XVII. 



Ptekocallis. 



fAlni . 



< Juglandicola 



(.Tilise . 



Fagi 



XVIII. 

 Phtllaphis. 



XIX. C j ugland i s 



Pttchodes. (. & 



XX. 



Lachntjs. 



XXI. 



Stomaphis. 



XXII. 



Paracletus. 



XXIII. 



Trama. 



XXIV. 



Dryobius. 



XXV. 



SCHIZONETJRA. 



XXV bis. 

 Cerataphis. 



XXVI. 



Pemphigus. 



XXVII. 



Tetraneura. 

 (Aploneura.)* 

 (Toxoptera.) 



XXVIII. 



TlIELAXES. 



XXIX. 

 Glyphina. 



f Agilis . 



Cupressi 



Juniperi 



Longipes 

 -{ Macrocephalus 



Picege . 



Pini . 



Pinicolus 

 ^Viminalis 



< Quercus 



< Cimiciformis 



\ Troglodytes . 



f Croaticus 

 (_ Roboris 



fCorni . 



j Fodiens 

 J Fuliginosa 

 "j Lanigera 



j Lanuginosa 



^Ulini . 



< Latania3 



fBursarius 



Filaginis 

 J Fuscifrons 

 j Lactucarius 



Pallidus 

 l^Spirothecae 



[ Ulmi . 



Vol. IV. 

 Dryophila 



f Betulaa . 

 \ Pilosa . 



PAGE^ 



. 31 



. 32 



. 34 



. 37 



. 40 



. 47 



. 46 



. 44 



. 59 



. 48 



. 58 



. 50 



. 52 



. 53 



. 62 



. 67 



. 68 



74 m 



71 l! 



107 



94 



96 



89 

 104 



97 



197 



117 



128 

 113 

 124 

 127 

 122 



131 



* Vide vol. iii, pp. 135, 136. 



