219 
CESTEACION. 
Formed by Cuvier on a most singular sbark, whicb 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 Setero- 
dontus by Blainville. 
CBSTEACION PHILIPPI. 
Squalus Philippi, Bloch, Schn., 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. 
G-unther, belong to a different sort, properly called Zehra by Mr. 
Gray {Ghondropterigii of the British Museum), and which 
inhabits Japan and some parts of India. 
Dr. Gunther describes a second Australian sort {Galeatus) 
of this genus, in which the anal fin reaches the root of the 
caudal ; I have not seen it. 
SPINAOID.^. 
“ Two dorsal fins, no anal. Mouth hut slightly 
arched ; a long, deep, straight oblique groove on 
each side of the mouth. Spiracles present ; Grill- 
openings narrow. Pectoral fins not notched at 
their origin,'''’ 
Acanihias Vulgaris is found in Australia, but I have not seen 
it from Victoria. 
