596 



TEXT-BOOK OF ENTOMOLOGY 



Leach 1 in 1815 gave the name of Ainetabola to insects without, and Metabola 

 to insects with a metamorphosis. 



Fro. 558. Partial metamorphosis of Melanojifus foinir-rubmm, showing: the five nymph 

 stages, and the gradual growth of the wings, which arc first visible externally in 3, 3ft, 3c. Emerton 



del. 



1 In Samouelle's The Entomologist's Useful Compendium, 1819. See Westwood's 

 Class. Insects, i, p. 2; Leach's Ametabulia comprised the Thysanura (Syuaptera) and 

 the lice. 



