SYNOPSIS. 417 



Sp. 227. A. vulpes. Fox Shark. Snout conical ; teeth in 



two or three rows, not numerous ; pectoral fins wide, 



pointed ; first dorsal rather high and triangular ; second 



dorsal and anal very small ; upper side of the tail with a 



depression at the base ; colour of the body and fins dark 



bluish grey, the belly whitish. — Bonap. Faun. ItaL^ Tarr, 



Brit. Fish., ii, 522. Carcharias vulpes, C^cv. Beg. An, 



Squalus vulpes. Penn. Brit. Zool, iii. p. 145. 



Gen. CXIII. Acanthias. Two dorsals, each having a spine 



in front, the first placed behind the line of the pectorals ; anal 



fin wanting ; teeth cutting and sharp, directed outwards and 



backwards. 



Sp. 228. A. vulgaris. Picked Dog-fish. Body long, snout 

 also long and conical ; teeth in two rows, not denticulated 

 on the edges ; branchial openings all before the pectorals, 

 five in number ; under lobe of the caudal small ; ventrals a 

 little behind the middle ; colour slate-grey above, white 

 beneath ; young spotted with white ; skin rather rough. 

 —Bisso. Hist.,m. 131 ; Yarr. Brit. Fish., ii. 524. Spinax 

 acanthias, Cuv. Beg. A n. Squalus acanthias, Lirm. Squa- 

 lus spinax, Penn. Bnt. Zool., iii. p. 133. 

 Gen. CXIV. Scymnus. All the fins small, no spines before 

 the dorsals, both of the dorsals low, the first a little before, and 

 the second a little behind the line of the ventrals ; anal want- 

 ing ; teeth in two or more rows, those in the upper jaw lancet- 

 shaped, and not much curved, those in the under jaw crooked 

 at the point ; temporal orifices large. 



Sp. 229. S. horealis. Greenland Shark. Snout somewhat 

 blunt ; mouth very large ; colour cinereous-grey ; irides 

 blue, pupil emerald-green ; upper lobe of the tail not very 

 long. — Fkm. Brit. An., Scoreshy, Arctic Begions, i. p. 538, 

 pi. 15, figs. 3, 4 ; Tarr. Brit. Fish., ii. 527. 

 Gen. CXV. Echinorhinus. Dorsal fins two, the first 

 placed very far back, opposite the abdominal fin ; teeth large, 

 compressed, and somewhat quadrangular, the edges with trans- 

 verse denticles ; skin covered with spinous tubercles. 



Sp. 230. B. spinosiis. Spinous Shark. Body very thick ; pec 



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