C 69 ] 



fhrinking from it, it furrounds them 

 like an Egg-fhell, and is detached from 

 the infedt itfelf, while it continues in 

 this ftate, till at length it burfts, and 

 excludes it completely winged. Such 

 is the cafe with many Flies. 



The claffes of Valifnerus are taken 

 from the plants, waters, earths, ani« 

 mals, and the other habitations of in- 

 fects. 



Reaumurs fyfiem of the Caterpillars 

 of Butterflies, is founded 011 the fitua- 

 tion and number of their middle feet, 

 wjiich are inferted into the circular or 

 oval rings under the body ; paying a 

 regard at the fame to the fix anterior 

 horny and pofterior membranous feet» 



S E C T. IX. 



HAVING obferved the nature of 

 infects in their feveral ftates, it re- 

 mains that we coniider them fyde- 



matically. 



