FEATHER LICE 



157 



on the Mallophaga should take warning that he will be tried almost 

 beyond endurance by the paradoxes and complexities which beset his 

 subject but he will also find, in the dual and inter-related aspect of 

 insect and bird, an infinite fascination. 



Phoresy; louse-fly transporting feather lice (x 10) 



