338 



The Descent of Alan. 



Fart II. 



carried, as Mr. Gould shewed me, to a wonderful extreme in 

 some species belonging to nearly every sub-group. Such cases 

 are curiously like those which we see in our fancy breeds, 

 reared by man for the sake of ornament: certain individuals 

 originally varied in one character, and other individuals of the 





Fig. 49. 



Spathura underwoodi, male and female (from Brehm). 



