lo. Ai,orECiAs. 393 



a. Stufiod, 10 i ftnt long. South Australia. 



!>. Stutt'ed, A'J inches louf^-. Cape seas. From Sir A. Smith's Col- 

 lection. 

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



2. Odontaspis ferox. 



Squalus ferox, Einso, Ichth. Nice, p. o8 ; liluinv. Faun. Fr. p. 87. 

 Carchariaa ferox, Jtisso, Eur. Merid. iii. p. 122; Guichen. Explor. 



Alt/er. Poiss. p. 124. 

 Odontaspis ferox, At/ass. Poiss. Foss. iii. pp. 87 & 288, tab. G. fig. 1 



(teeth); 3Ii(ll. (ij- Henle, pp. 74, 191; Bonap. Faun. It. I'esce; 



Dunieril, 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. {Ayass.) 



Mediterranean. 



15. ALOPECIAS. 



Alopias (Alopecias), Midi. Sf- 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. Gill-openings of moderate width. 



Temperate and tropical seas. 



1. Alopecias vulpes. 



Fox ; Thrasher. 



^'ulpes, Bvndel. p. 387 ; Gesner, Ue Aquut. p. 104-'). 



Simia, BvUon. Ue Aquut. p. fio. 



Singe de mer, Be/an, Nat. et Divers, des Poiss. p. 88. 



Vulpeculii, Sulciaii. p. 134, pi. 42; Willuyhby, tab. B 6. fig. 2; 



Jonston, De Pise. tab. 7. fig. 3 ; Aldrovand. p.'3n6. 

 Squahis no. 8, Artedi, Geu. p. 68 ; Sipion. p. OO. 

 Kenard niariu, Perraulf, Mew. Ac. Sc. iii. pis. 15,10; Duhdinel, 



Pesc?i. ii. sect. ix. p. 303, pi. 21. figs. 1 & 2 ; Zacep. i. p. 207. 

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



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

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

 Loug-tailed Shark, Penn. Brit. Zool. iii. p. 97, pi. 14, or, edit. 1812, 



iii. p. 145, pi. 17. 

 Squahis vulpes, Gm. L. Sxjst. Nat. i. p. 1496 ; Bl. Scfin. p. 127 ; Turt. 



Brit. Fmm. p. 102 ; Mitch, in Phil. i<f Lit. Iran,';. N. York, i. 



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

 Carcharias vulpes, Cuv. lief/ne An. ; Bisso, Ichth. Nice, p. 36, and 



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

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

 rand vary in number ; thus, for instance, one example has III teeth on one side 

 of the upper jaw and 'J.'i on liic otlier. 



