219 



CESTBACION. 



Formed by Cuvier on a most singular shark, which can be 

 easily recognised by its two dorsal fins having each a strong 

 spine, and by its singular dentition in form of pavement, with the 

 posterior teeth much larger. This genus has been called Hetero- 

 dontus by Blainville. 



CESTEACIOK PHILIPPI. 



Squalus Philippi, BlocJi, Schi., p 134. 



Port Jackson Shark, Phillip, Voyage, p. 283. 



This sort does not attain very large dimensions, a specimen of 

 three feet and a-half long being considered by the Hobson's Bay 

 fishermen as being of rare occurrence. In one, of that size, the 

 teeth are almost entirely obtuse ; but in another of thirty-two 

 inches long they are conic and pointed. 



The upper parts are of a light brown, marbled with yellow, and 

 the lower ones of a beautiful white; these fine yellow tinges 

 extend along the sides and above the pectorals. 



The colour is similar in all the specimens I have seen, 

 and I believe that those with black bands, mentioned by Dr. 

 Grunther, belong to a different sort, properly called Zebra by Mr. 

 Gray (Ghondropterigii of the British Museum), and which 

 inhabits Japan and some parts of India. 



Dr. Grunther describes a second Australian sort (Qaleatus) 

 of this genus, in which the anal fin reaches the root of the 

 caudal ; I have not seen it. 



SPINACnm 



" Two dorsal fins, no anal. Month bnt slightly 

 arched; a long, deep, straight obliqne groove on 

 each side of the month. Spiracles present ; Gill- 

 openings narrow. Pectoral fins not notched at 

 their origin/'' 



Aeanthias Vulgaris is found in Australia, but I have not seen 

 it from Victoria. 



