Group Aphidina, Family Aphididae 75 



whole as it gradually began to dawn upon them. It is yet incom- 

 ■plete, many important parts are still lacking, and much obscured by 

 temporary outside additions and rubbish. These in due time will be 

 cleared away and the building will stand out in all its splendor — the 

 taxonomy of the Aphididae. After all, this will be but a faint imita- 

 tion or interpretation of the phylogeny of the Aphididae, a part of 

 the still greater, the organic evolution as erected during the periods of 

 the past. 



