15. Ai^oPKCiAs. 393 



a. Stutt'ed, lOl feet long. South Australia. 



/'. Stutt'ed, 42 inches long. Capo aeas. From Sir A. Smith's Col- 

 lection. 

 c-f. Jaws of very large specimens. Tasmania. 



2. Odontaspis ferox. 



Squalus ferox, Risso, Ichth. Nice, p. 38 : Blainv. Faun. Fr. p. 87. 

 Carcharias ferox, Risso, Eur. Merid. iii. p. 122; Quicken. Explor. 



Alyer. Poiss. p. 124. 

 Odontaspis ferox, Ayass. Poiss. Foss. iii. pp. 87 & 288, tab. G. fig. 1 



(teeth); Miill. ^ Henle, pp. 74, 191; Bonap. Faun. It. Pesce; 



Dumeril, Elasmobr. p, 418. 



Teeth of the upper jaw : the first much smaller than the second 

 and tliird, which is followed by four very small teeth, the following 

 teeth being again of large size. Each tooth with a double cusp on 

 each side of the base. {Aynss.) 



Mediterranean. 



15. ALOPECIAS. 



Alopias (Alopecias), Miill. S^ Henle, p. 74. 



The first dorsal fin opposite to the space between the pectoral and 

 ventral, without spine ; the second and anal very small. Caudal 

 fin of extraordinary length, with a pit at its root. No keel on the 

 side of the tail. No membrana nictitans. Spiracles immediately 

 behind the eye, minute (and probably frequently absent). Mouth 

 crescent-shaped. Teeth equal in both jaws, of moderate size, flat, 

 triangular, not serrated, (jill-openings of moderate width. 



Temperate and tropical seas. 



1 . Alopecias vulpes. 



Fox ; Thrasher. 



^'ulpe3, Rondel, p. 387 ; Gesner, De Aquat. p. 1043. 



Siniia, Bellon. De Aquat. p. 65. 



Singe de nier, Belon, Nat. et Divers, des Poiss. p. 88. 



Vulpeculii, Salvian. p. 134, pi. 42; Willuglihy, tab. B 6. tig. 2; 



Jonston, De Pise. tab. 7. fig. 3; Aldrovand. p. 396. 

 Squalus no. 8, Aitedi, Gen. p. 68; Synon. p. 96. 

 Kenard marin, PerrauH, Meat. Ac. ISc. iii. pis. 15, 16; Duhatnel, 



Pesch. ii. sect. ix. p. 303, pi. 21. figs. 1 & 2 ; Lac^p. i. p. 267. 

 Sea-fox, Thresher, or Thrasher, Borlase, Confiw. p. 265 ; Couch, Fish. 



Brit. Isl. i. p. 37, pi. 7. 

 Galeus cauda longa, Klein, Pise. Miss. iii. p. 10. 

 Long-tailed Shark, Petm. Brit. Zool. iii. p. 97, pi. 14, or, edit. 1812, 



iii. p. 145, pi. 17. 

 Squalus vulpes, Gtn. L. Syst. Nat. i. p. 1496 ; Bl. Schn, p. 127 ; Turt. 



Brit. Faun. p. 102 ; Mitch, in Phil. 8f Lit. Trans. N. York, i. 



p. 482; Blainv. Faun. Fr. p. 94, pi. 14. fig. 1. 

 Carcharias vulpes, C%lv. Reyne An. ; Risso, Ichth. Nice, p. 36, and 



to be due to sex or age of the individuals. In stuffed examples the exact relative 

 position of tlie fins is very rarely preserved. The posterior teeth are very small, 

 and vary in number; thus, for instanee, one example lias K) teeth on one side 

 of the upper jaw and 2."> on I he otlior. 



