SYNOPSIS OF THE TRIBE APHIDINiE. 



Upper wings witli a 

 doubly forked cubitus, 

 and lower wings with 

 two oblique veins. 



f Antennae with 

 seven joints . 



^9 



-fSt- 



Antennse with 

 six joints 



1 Siphonophora. 



2 Phorodon. 



3 Myzus. 



4 Di'epanosiphum. 



5 Amphorophora. 



6 Megoura. 



7 Rhopalosiphum. 



8 Melanosanthus. 



9 Sii)hocoryne. 



10 Aphis. 



11 Hyalopterus. 



12 Chaitophorus. 



13 Pterocomma. 



14 Cryptosiphum. 



15 Brachycolus. 

 ^16 Calliptorus. 



Pterocallis. 

 Lachnus. 

 Dryobius. 

 Stomaphis, 





A comparison of this table of genera with that furnished in p. 94, 

 vol. i, will show a slight difference; but this diflference will readily 

 explain itself if we remember that new forms ai*e likely to present 

 themselves, which may make certain modifications desirable. 



