[ 6 3 ] 



transformation. This renders the fcience 

 much more extenhve, but at the fame 

 time is greatly conducive to finding out 

 the natural orders. Infects change firft 

 from the (Ovum) egg into the (Larva) 

 Caterpillar or Maggot, then into the 

 (Pupa) or Chrjfalis, and laftly into the 

 (Imago) Fly or Per fect fiate . [See plate 2 .] 

 Puring each of thofe changes, their ap- 

 pearance difFers as much as night and 

 day. 



The infedt, as foon as it came out of 

 the egg, was by former entomologifts 

 called Eruca ; but as this is iynonymous 

 with the botanic name Sifymbrium, 

 it was changed by Linnaeus, for the 

 term Larva, a name expreffive of the 

 infedVs being 111 this ftate, as it were, 

 mafked, having its true appearance 

 concealed. Under this maft or fkin 

 the intire infect, fuch as it afterwards 



. appears 



