SYNOPSIS OP CLASSIPIOATION. 
9 
These may vanish when we possess more complete 
knowledge of those rare male and female oviparous 
forms which close the cycles of the various species. 
The following synopsis is appended, to set forth the 
general relations of the Aphides to t)ther families of the 
class Insecta. 
The Aphides have the following family synonyms : 
Aphides^ Linnseus. 
Aphides^ Curtis, Westwood. 
Aphidina, Burmeister, Walker, Hartig. 
Apliidinm^ Bondani. 
ApMdidce, Passerini. 
ed 
-4-3 
Coleoptera. 
Orthoptera. 
Neuroptera. 
Hymenoptera. 
Lepidoptera. 
Diptera. 
Hemiptera 
(E/liyiicliota). 
Heteroptera. 
m 
u 
0? 
rd 
o 
s 
m 
0) 
» fH 
a 
v_ 
r. 
.2 
Homoptera. 
I I 
Cimicidffi. 
Pentatomid®. 
Coreidaj. 
Reduviid^. 
Acanthiidse. 
Hydrometridffi. 
Nepid®. 
Notonectidse. 
Cica^iidse. 
Oercopidse. 
Thripidffi. 
Psyllidffi. 
Aphidid^. 
Coccid^. 
It would be premature here to discuss the question, 
as to what really constitutes the individual in such an 
exceptional group as Aphis. In a general way it may 
be assumed, that development proceeds from the egg to 
the imago through several metamorphic phases. 
The immediate products of the eggs -are active six- 
footed larvse, which, in the individualisation of the sub- 
sequent generations, undergo slight modifications at 
the times of their various moultings. Eventually six- 
footed active pup^ appear, which finally become 
winged imagos. 
