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., Yarr. 



Brit. Fish., ii. 522. Carcharias vulpes, Cuv. Reg. An. 



Squalus vulpes, Perm. 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. 

 Risso. Hist., in. 131 ; Yarr. Brit. Fish., ii. 524. Spinax 

 acanthias, Cuv. Reg. A n. Squalus acanthias, Linn. Squa- 

 lus spinax, Penn. Brit. 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. borealis. Greenland Shark. Snout somewhat 

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

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

 long. Flem. Brit. An., Scoresby, Arctic Regions, i. p. 538, 

 pi. 15, figs. 3, 4 ; Yarr. 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. E. spi/.osits. Spinous Shark. Body very thick ; peo 



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