GENERAL SYNOPSIS. 



r 



CHERMESINiE. 



Upper wing with j 

 only three veins ; j 

 lower wing with | 

 one oblique vein. 



I 



Rhizobiin^. 

 Winged forms un- 

 \ known. 



GENERA. 



XXX. 



Chermes. 



f Abietis 

 Atratus 

 «j Corticalis 

 j Laricis . 

 l^Pini . 



C Punctata 



< Quercus 

 Phylloxera. , |^ astatrix 



XXXI. 



XXXII. 



Forda. 



XXXIII. 



Tychea. 



XXXIV. 



Endies. 



XXXV. 



Rhizobius. 



PAGE 



. 24 



. 39 



. 23 



. 33 



. 40 



. 45 



. 49 



52,57 



( Forinicaria . . 83 



(_Viridana . . 85 



fEragrostidis . 89 



| Phaseoli . . 90 



•{ Setaria3 . . 88 



| Setulosa . . 87 



[_Trivialis . . 86 



C Carnosa . . 92 



< Formicina . .91 



CPellucida . . 91 



\ Graminis (Poee) . 93 



