1 86 



MAMMALIA, REPTILIA, ETC, 



This is usually a smaller, but much more graceful 

 fish than the former. In it the spines are not dis- 

 tributed over the body, but are confined to a single 



Fig. 121. 



The White Ray (Raia lintoa). 



series running down the back and tail. The common 

 skate (Raia batis) is a different species from either, 

 and its flesh is usually preferred to theirs. On the 

 eastern coasts some very large individuals occur, and 



