322 



W. HOVANITZ 



approximates that of the environment, their activity depends on 

 warmer temperatures. The PapiHonidae, Pieridae, Danaidae, 

 Morphidae, Satyridae, Brassolidae, NymphaHdae, Erycinidae, and 



o 

 •< o 



PAPIL ION I OAE 



Fig. 1. New World distribution of butterfly families. 



Lycaenidae are all represented by far more genera or species in the 

 tropical parts of the world than in the temperate or boreal parts. 

 Independently, certain genera or species of some of these families 

 appear to have become adapted to life in colder regions, so that 

 some of these would be considered as arctic types or temperate types, 

 despite the fact that the family as a whole is tropical. 



