72 LIST OF FISH. 



Squalus pinna ani carens, naribus in extremo rostro, Artedi, Gen. 



Pise. 506. 

 Blaataske, Ascanias, 37. 



Centrina nigra, Lowe, Proc. Zool. Soc. 1833, pt. 1, p. 144. 

 Acanthorhinus spinas, JBlainv. Bull. Soc. Phil. 121, 1816. 

 Spinax niger, Bonap. Faun. Ital. 12. Mull. 8r Henle, Plag. 86. 



Agassiz, iii. t. B, f. 4, 5, 9. 

 Acanthidium pusillum, Lowe, Proc. Zool. Soc. 91, 1839. 



Hab. — N. Sea, Mediterranean and Madeira. 



3. OXYNOTUS. 



Snout short, thick and flat. Nostrils near the edge of the same. 

 Nasal-flap four-sided. The coiner fold of the naked labial carti- 

 lages united above and below on the mesial line with the skin of the 

 head. Spout-holes very large behind and somewhat above the 

 eyes, having an upward and downward direction, crescentic, with 

 one flap. Upper-teeth slender, conical, and little cutting, straight, 

 connected with the skin of the fore part of the jaw. The base of 

 these teeth is notched in the middle. The under-teeth are either 

 straight or nearly so, and the outer ones inclined very slightly out- 

 wards, broader and flatter than the upper ones, very keenly cutting, 

 nearly equilateral, finely serrated on the edge. The middlemost 

 tooth is single, exactly equilateral ; the base of the under-jaw teeth 

 nearly four-cornered. The spine of both back-fins is enveloped to 

 the point in the skin. Tail-fin without an under lobe, and having 

 no notch. The males have appendages which are wholly soft, 

 without a spine. Scales upright, points standing on a four-sided 

 base. 



Oxynotus, Rafin. Caratt. 1810. 



Acanthorhinus, sp., Blainv. Bull. Soc. Phil. 121, 1816. 



Centrina, Guv. Reg. An. 2 ed. ii. 392, 1817. Mull. $■ Henle, Mag. 



Nat. Hist. ii. 1838. Plagiost. 87. Bonap. Selach. Tab. Anal. 



8, 1838. 



1. Oxynotus Centrina. 



Vulpecula, Belon. 63. 



Vulpecula italica, Belon. 64. 



Centrina, Rond. 384. {Copied from Gesner, 719). Jonst. vii. 5. 



Salnani, 157, f. 56, 57. (Copied from Willoughby, ii, 3). 



Ruysch, t. vii. f. 4, t. 31, f. 1 . Ray, Ichth. 21. 



