164 ON AN UNDESCRIBED SHARK FROM PORT JACKSON. 



Measurements — continued : — 



Breadth of head immediately in front of gill-openings, 



nearly ... ... ... ... ... ... 4J 



Breadth of snout immediately in front of eyes, nearly ... 31 



Interorbital space ... ... ... ... ... ... 3^ 



Distance between tip of snout and mouth ... ... 2^ 



Distance between tip of snout and nostril, nearly ... 2 



Distance between tip of snout and eye, nearly ... ... 3 



Distance between nostril and mouth ... ... ... 1_^ 



Distance between outer angfles of nostrils ... ... 2 



3 



Distance between eye and first gill-opening ... ... 3^^, 



Width of mouth ... ... ... ... ... ... 21 



Depth of mouth ... ... ... ... ... ... Ig 



Origin of first dorsal to the end of the base of pectoral ... 5/,^ 



End of first dorsal to the origin of ventral ... ... 5^ 



Outer edge of pectoral ... ... ... ... ... 51 



Inner edge of pectoral ... ... ... ... ... 1\ 



Intradorsal space ... ... ... ... ... ... 8J 



Diameter of eye ... ... ... ... ... ... 1 



Length of longest gill-opening ... ... ... ... I3 



This Shark is said to be not uncommon on the New South Wales 

 Coast, where it is called the " Whaler," and has been hitherto 

 confounded with Dr. Giinther's Carcharias brachyurus, from which 

 however it may be recognised at a glance by the shape of the mouth 

 and the obtuseness of the snout. Type specimen in Australian 

 Museum, I. 1155. 



