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CHAPTER Iil. 
ANATOMY AND PHYSIOLOGY. 
TEGUMENTARY SKELETON. HEAD. EYES. ANTENNZ. MOUTH: ITS 
DETAILS AND COMPARATIVE ANATOMY. 
I po not propose to enter here into a detailed 
account of the anatomical structure of wasps. I 
would limit myself to the notice of the points in 
which wasps as a class differ from those insects 
to which they are most nearly allied ; of the parts 
which supply their most important distinctive cha- 
racters; and, summarily, of all those organs by which 
they are peculiarly adapted to their place in the 
scale of nature. Not that there is anything in the 
structure of these tiny organisms but what has an 
intimate relation and due proportion to the other 
parts, and to the purpose of the whole. There is, 
indeed, nothing that we can really regard as unim- 
portant, there is nothing to spare in an insect, any 
more than there are any wheels to spare in a piece of 
watchwork. But there are some parts which have a 
more obvious importance, as being the apparent 
means by which the little creature is fitted to the 
sphere assigned to it. 
