Class IV. T H O R N B A C K, ^3 



Mouth fmall : teeth minute, fpicular. 



Five openings to the gills, as in others of this 



genus. 



The Ikin every v^'here fmooth ; cinereous brown 

 above i white beneath. 



** With blunt Teeth, 



La Ray« bouclee. Belo/i yo, Raia clavata. Lin,fyfl. 297. 37« Thorn- 

 Kaia clavata. RondeL 353. Gromv, Zooph. No, 154. back. 



Ge/ner pi/c^ 795. R. aculeata dentibus tubercu- 

 Steinroch. Shone^velde, 59. lofis, cartilagine tranfverfa 



Thornback. Wil Icth, 74. abdominali. Arted.fynon. 94, 



Rail fyn. fife, 26. Racka. Faun. Suec. No. 293. 



THIS common fifh is eafily diftinguifhed from 

 the others by the rows of ilrong (harp fpines, 

 difpofed along the back and tail. In a large one 

 we faw, were three rows on the back, and five on 

 the tail, all inclining towards its end. 



On the nofe, and on the inner fide of the fore- 

 head, near the eyes, we^e a few fpines, and others 

 were fcattered without any order on the upper part 

 of the peroral fins. 



The mouth was fmall, and filled with granulated 

 teeth. 



The upper part of the body was of a pal« afli 

 color, marked with fhort ftreaks of black, and the 

 Ikin rough, with fmall tubercles Hk€ fliagrecn. 



The 



