PLATE U4 
PLATE XX. 
RAJA RUBUS. 
ROUGH RAY. 
GENERIC CHARACTER. 
Spiracles ten, five on each side, oblique, and placed beneath, 
near the neck : head small, pointed, not distinct from the breast, 
with the mouth beneath, transverse, and toothed : body thin, de- 
pressed, and rhombic. 
SPECIFIC CHARACTER 
AND 
SYNONYMS. 
Back a single, tail with three rows of spines. 
Raja Rubus: ordine aculeorum in dorso unico, tribusque in cauda 
Block. Child. Linn. Syst. Nat. T. 1 . p. 3- 
p. 1501 . sp. 10 . 
La Ronce. Block. 
Linnaeus was either unacquainted with this fish ; or perhaps mis- 
took it, as Block observes, for a variety of the common Thornback. 
It has been since described by other writers, and lastly by Gmelin. 
This author is of opinion, that the Ray which Mr. Pennant found 
in Lock Broom, in the Shire of Ross, in Scotland, and which he 
