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a black pupil. It frequents deep water rather than the shore. 

 It attains twelve or fifteen feet in length, and then weighs 

 five hundred weight. The flesh is coriaceous, and scarcely 

 eatable, but the liver affords a considerable quantity of oil. 

 Like most sharks, it is voracious, and is said to be dangerous, 

 even to man. It feeds principally however on the rays. 



The female, which is ovovivaparous, produces ten or twelve 

 at a birth. 



We insert the figure of a species of Zygcena, taken off the 

 south coast of New Holland. It appears to differ from the 

 common species in the caudal fin, which, according to the 

 drawing, is divided into two lobes, much more unequal ; the 

 anterior lobe nearly as large as the first caudal, the second 

 forming a slight fringe under the tip of the tail. 



The genus Squatina appears almost intermediate be- 

 tween the sharks and the rays. The Squalus squatina of 

 Lin., the Monk-fish, and the Angel-fish, of the English, de- 

 rives those names from the fancied similarity of the head to a 

 monk's cowl, and of the pectoral fins to an angel's wings ; 

 these are extremely large, and shaped like half-extended 

 wings ; the muzzle is wider than the body, and appears to 

 be attached by a sort of neck ; the head is large, round, and 

 depressed, with the mouth, unlike that of sharks in general, 

 opening in front, and not under a snout. The teeth are sharp, 

 bent, forming two rows, and appear to increase in number 

 with the age of the fish. The nostrils are covered with a 

 membrane like barbels. 



This fish inhabits the Mediterranean, and is described by 

 Aristotle under the name pivt) (a file), with reference doubt- 

 less to the use made of its skin, in common with that of most 

 sharks, at the present day, to polish wood and other sub- 

 stances. It is gray above, and white underneath, but the 

 pectoral fin edged with brown underneath. It attains eight 

 feet in length, and sometimes is found weighing 160 pounds ; 



