SPINACID-K. 



417 



Fam. 7. SPINACID^. 



Two dorsal fins ; no anal. Mouth but slightly 

 arched ; a long, deep, straight oblique groove on each 

 side of the mouth. Spiracles present ; gill-openings 

 narrow. Pectoral fins not notched at their origin. 



2K CENTEINA. 



Centrina, Cin\ Rbgne Atiim. 

 Oxynotus, Rajinesque. 



Two dorsal fins, each with a strong spine ; no anal fin. Trunk 

 rather elevated, trihedral, with a fold of the skin running along each 

 side of the belly. Mouth narrow, with a deep groove on each side. 

 Teeth of the lower jaw erect, triangular, finely serrated ; those of 

 the upper slender, conical, forming a group in front of the jaw. 

 No membrana nictitans. Spiracles wide, behind the eye. Gill- 

 openings narrow. 



Mediterranean and neighbouring parts of the Atlantic. 



1. Centrina salviani. 



Centrina, Rondel, p. .384 ; Salvian. p. 1-57 ; Gesncr, Be Aqiiat. p. 609; 



Aldrov. p. 401 ; Willughby, p. 58, tab. B 2 and B 3. 

 Vulpecula, Bellon. De Aquat. pp. 63, 64. 

 Galeus centrina, Gesner, De Aquat. p. 1040. 

 Squalus, sp. no. 5, Artedi, Synan. p. 9-5 ; Gen. p. 67. 

 Galeus, sp. no. 7, Klein, Miss. iii. p. 10. 

 Squalus centrina, L, Si/.sf. Kaf. i. p. 398 ; Bl. Ausl. Fiseh. i. p. 23, 



taf. 11-5; Bl. Schn. p. 26; Briinn. Pise. 3fass. p. 3; Risgo, Ichth. 



Nice, p. 42. 

 La Mielga, Cornide, p. 128. 

 Squale humantiu, Lacep. i. p. 213, tab. 9. 

 Squalus (Acanthorhinus) centrina, Blainv. Faun. F>: p. 61, tab. 15. 



Centrina salviani, Risso, Fur. Mend. iii. p. 135 ; Bonap. Faun. Hal. 



Pesc. ; Midi. <§• Ilenle, p. 87 ; Bocaqe Sf Capello, Peix. Plagioat. 



p. 32. 



humantin, Cloquet, Diet. Sc. Nat. vii. p. 385, pi. 31. 



O.tynotus centrina, (Rajinesque) Duineril, Elasmnbr. p. 444. 



A fold of the skin runs along the median line of the back for- 

 i wards from the dorsal spine to the head, and is continued back- 

 [ wards to the second dorsal fin. Scales spiny. Yentrals opposite to 

 I the second dorsal. 



Mediterranean; coasts of Portugal. 



\a-h. Stuffed, 24 and 27 inches long. Gibraltar. 



29. ACANTHIAS. 



Acnnthias, sp., Ri.sso, Fur. Merid. iii. p. 131. 

 Acanthia.*, Miill. ^- Henh. 

 VOL. viir. • 2 B 



