PLATE IX. 



23 



to prove them either varieties of each other, or difFerence of fex only, 

 although Linnaeus confidered them as diftinil fpecies. They differ in 

 colour, the caterpillars of one being light yellow brown, the other 

 black, and the upper wings of the Evonymella are lefs of a lead colour 

 than thofe of the Padella, 



To gain information on this fubje6l, we, this feafon, put the eggs 

 of feveral females into different glaffes ; the eggs of each female pro- 

 duced both kinds of caterpillars, they became chryfalides, and a num- 

 ber of each fort of the Flies came forth. 



PLATE 



