OF NEW SOUTH WALES. 309 



Heterodontus, Bl. 

 Head short, high, with an elevated ridge over each eye. Two 

 dorsal fins, each with a strong spine ; the anterior fin opposite 

 the space between the pectoral and ventral fins, the posterior 

 in advance of the anal. Nostrils and buccal cavity confluent. 

 Mouth narrow, inferior, almost terminal. Spiracle small, below 

 and behind the eye. Teeth alike in both jaws, numerous, pave- 

 ment like, and convex, those in front small, and more or less 

 tri-cuspid, those behind large, and much longer than broad. 



Heterodontus Phillipi. 



Port Jackson Shark, Phillipps, Yoy., p. 283. 



Tabhigav; of the Sydney Aborigines. 



Sqiiale PMllipp, Lacep. 1, p. 218. 



Squalv.s PhilUppi, Bl. Schn., p. 134. 



Cestracion Phillvpi, Cuv. Regm. Anim ; Less. Voy. Coq. Zool. 

 2, p. 79, Poiss. pi. 2 ; Mull, and Henle, p. 76. pi. 31 ; Schleg. 

 Faun. Japon, Poiss., p. 304 ; Striiver, Nov. Act. Acad. Carol. 

 Leopold, Nat. Cur. 23, 1864. 



Cestracion Philippi, Gunth. Cat. Brit. Mus. 8, p. 415. 



Heterodontus Phillipi, Blain. Nouv. Bull. Sc. 1816, p. 121 • 

 Gray, Catal. Chondropt, p. 65 ; Dum. Elasm, p. 424. 



Cestracion Zebra, Gray, Zool. Misc, p. 5 ; Richards, Ichth. 

 Chin., p. 195. 



Heterodontus Zebra, Gray, Chondropt. p. 64 ; Bleek. Verh. Bat. 

 Gen. 26, Nieu Nalez. Japan, p. 127, and Act. Soc. Sc. Neerl. 1, 

 Amboyna, p. 71. 



General form elongate, subcylindrical, tapering gradually from 

 the head. Height of head at the orbit, one-seventh of the total 

 length of the fish ; length of head, from the snout to the first 

 gill opening, one-sixth of the same, and equal to the length of 

 the tail ; profile, from the top of the head to the extremity, nearly 

 straight, the slope being less than an angle of 45° from the 

 vertical. 



The snout is rounded anteriorly, with the mouth and nostrils 

 on the under surface, but nearly terminal. The upper lip occu- 

 pies the whole width of the head, and is much divided. At each 



