21G 
ZYGvENA MALLEUS. 
Zygsena, Rondel., p. 389. 
Squalus Zygsena, Liss., Syst. Nat., p. 399. 
{Hammer S/iarh;.') 
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. 
GALEHS. 
This genus is due to Cuvier, who established it in his magnifi- 
cent work, the “ Regne Animal.” 
GALEOUS CANIS. 
Galeus Canis, Rondelet., p. 377. 
Squalus Galeus, Lin., Syst. Nat., voh 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. 
MUSTELHS. 
Genus also due to Cuvier. 
MUSTELUS 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, hut 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. 
