56 
SPINOUS SHARK. 
waved, and widest at the middle; the lower lobe rounded and 
obsolete. On the back the colour dark; lighter, with tints of 
blue, along the upper sides and tail; yellow with reddish tints 
on the belly; the fins edged with reddish flesh-colour. Ihere 
are no spines on the snout and fins, and those on the body are 
nearly straight. 
Mr. Fox describes these spines as being tubercles with re- 
curved points, and as such they are represented in Mr. Yarrell’s 
engraving. Lacepede says they are tubercles of unequal size, 
large and round at the base, as in the Thornback Ray,^ with 
one or two crooked points to each; and Risso’s description 
expresses nearly the same thing, but he represents the second 
dorsal fin as of very small size. 
