216 



ZY C, JETS A. MALLEUS. 



Zygsena, Rondel., p. 389. 



Squalus Zygsena, Lies., Syst. Nat., p. 399. 



{Hammer Shar7c.) 

 This sort is found commonly in Hobson's Bay. I have had 

 no opportunity of comparing it with European specimens, but 

 Professor M'Coy considers it as similar. 



GALEUS. 



This genus is due to Cuvier, who established it in his magnifi- 

 cent work, the " Regne Animal." 



GALEOUS CANIS. 



Galeus Canis, JSondelet., p. 377. 



Squalus Galeus, Lin., Syst. Nat., vol, i., p. 397. 



{The Tope.) 



Common in Hobson's Bay, and appears similar to the Euro- 

 pean sort. It does not attain very large dimensions, and is 

 entirely grey. 



MUSTELUS. 



Genus also due to Cuvier. 



MUSTELTTS ANTAECTICUS. 



Mustelus Antarcticus, Gunther, Gatal., vol viii., p. 387. 



{Smooth Head.) 



This is also very common in Hobson's Bay ; it is entirely of a 

 grey colour. Professor M'Coy had considered it as similar to 

 the European Must. Vulgaris, but Dr. Gunther separates it on 

 account of the origin of its dorsal fin being behind the inner 

 posterior angle at the pectoral, when in Vulgaris it is nearly 

 opposite to the middle of the inner margin of that fin. 



These two last sharks are the most common sorts found in 

 Hobson's Bay. They may be very easily distinguished by the 

 teeth, which in Galeus Canis are sharp and serrated, and in 

 Mustelus are disposed as a pavement. 



