CONDITIONS OF LIFE 251 



Angler-fishes (Ceratioidea) , and will be considered in detail in a 

 subsequent chapter (<:/. p. 315). Here the dwarf male is a 

 parasite on the female, spending the greater part of his Hfe 

 as a mere appendage attached to the body of his mate, and 

 deriving nourishment from her blood. 



