THE BUTTERFLIES. 5 



Many authors divide the Lepidoptera into three sections, 

 Diurna, Crepuscularia, and Nocturna, according to the times 

 of flight of the majority of the species which they include. 

 The Diurna correspond to the Rhopalocera, or Butterflies. 



We may here remark that Urania is now regarded by all 

 entomologists as belonging to the Moths. 



Boisduval's system (" Species General des Lepidopteres," 

 tome i., 1836) is more extended, and is based primarily on the 

 mode of attachment of the pupa. 



Rhopalocera. 



Suspensi. 



Danaides. 

 Succincti. Heliconides. 



Papilionides. Nymphalides. 



Tierides. Brassolides. 



Eumenides. Morphides. 



Lycaenides. Satyrides. 



Erycinides. Biblides. 



Peridromidcs. Libytheides. 



Involuti. 

 Hesperides. 



The arrangement of families employed by Doubleday and 

 Westwood (1846-1852) in their "Genera of Diurnal Lepidop- 

 tera " is a modification and amplification of Boisduval's scheme. 



Papilionidae. Brassolidae. 



Pieridae. Eurytelidae. 



Ageronidae. Satyridae. 



Danaidae, Libytheidae. 



Heliconidae, Erycinidae. 



Acraeidas. Lyeaenidae. 



Nymphalidae. Hesperidae. 

 Morphidae. 



