LIST OF FISH. 87 



Mr. Swainson (Cabinet Cyclopaedia, ii. 319, 1839) divides these 

 animals thus : — 



I. Pristine. — 1. Pristis. 



II. RaidjE. 



Sub-fara. 1. Trygonince (String Rays). — 1. Trygon. — 2. Pasti- 

 naca. — 3. Pteroplatea. — 4. Raja. — 5. Anacanthus. 



Sub-fara. 2. Pterocephalirue (Eagle Rays). — 6. Myliobatis. — 7. 

 Rhinoptera. — 8. Cephaloptera. — 9. JStobatis. — 10. Pterocephala, 

 Swains. = Cephaloptera, Dum. 



Sub-fam. 3. Torpedince (Torpedo Rays). — 11. Torpedo. — 12. 

 Temera. 



Sub-farn. 4. Squatinm. — 13. Squatina. 



Sub-fam. 5. Rhinobatince. — 14. Rhinobates. — 15. Rhina. 



Fam. 4. PRTSTISID^. 



The form of the body approaches most nearly to those sharks 

 which have the breast-fin distinctly set off from the head, and not 

 reaching to the belly-fins. The snout is prolonged into a long saw, 

 which bears teeth implanted on the lateral edge. The first back-fin 

 stands close behind, or some distance above the belly-fins. The cu- 

 ticular keel of the tail is not continued to the sides of the tail-fin. 

 The skin is sleek, clothed with very small, flat, roundish, or six- 

 cornered scales, planted like paving stones. 



Pristides, Mull. $■ Henle, Plag. 105. 



Squatinoraiae, part, Mull. Sf Henle, Plag. 103. 



Scymni, part, Mull. 8p Henle, Plag. 91. 



Pristis, Lath. Trans. Linn. Soc. ii. 282. Cuv. Reg. An. 2 ed. ii. 



394. 

 Pristobatus aut Raja serratae, Blainv. Bull. Soc. Phil. 121, 1816. 



Jour, de Phys. 262, 1816. 

 Pristine, Swains. Cab. Cycl. ii. 219, 1839. 



1. PRISTIOPHORUS. 



The snout is greatly lengthened, and is beset on both sides with 

 longer and shorter hooked spines, so that it resembles the saw 

 of Pristis ; the prickles are only attached to the skin, not implanted. 



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