FISH AND FISH-LIKE ANIMALS OF N.S.W., 



JJ. Caudal peduncle with lateral keels. 

 L. Gill-openings moderate, teeth large. 



Family Isuridae (No. xiii.) . 

 LL. Gill-openings very wide, teeth small. 



Family Cetorhinidae (No. xiv.s, 



CC. Anal tin absent. 



M. Body subcylindrical, pectoral fins normal. 



N. Dorsal fins with spines, snout normal. Family Squalidae (No. xv.). 

 XX. Dorsal fins without spines, snout saw-like. 



Family Prist iop/wiidae (No. xvi.) . 

 MM. Body depressed; pectoral fins greatly enlarged, with an anterior 

 extension separated from the body by a notch. 



Family Squdtinidae (No. xviij . 



HI. Family Hexanchidae. 



A. Head broad, snout broad. Notorhynchus (3). 



AA. Head tapering, snout narrow. Heptranchicu (4). 



3. Notorhynchus Ayres, Proe. Cal. Acad. Sci. i, 1855, p. 73 (maculatus). 



3a. X. pectorosus. Seven-gilled Shark, lleptranchias pectorosus Garrnan, 



Bull. Essex. Just, xvi, 1884, p. 56; H<eptranehias indicus Macdonald and 



Barron, Proc Zool. Soc. 1868, p. 371, pi. 33. (PI. i.). 



A small shark, with numerous primitive characters, reaching about eight feet 



in length; the teeth are of remarkable form, and very different in each jaw. Rare 



in our waters. 



4. Heptbanchias Kafinesque, Caratt. gen. spec. Sicilia, 1810, p. 13 (cinereus). 

 4a. H. perlo. One-finned Shark. Squalus perlo Bonnaterre, Eucycl. Meth., 



Ichth., 178<*. p 10; U. perlo McCulloch, Zool. Res. Endeavour i. 1, 1911, 



p. 2, pi. 1, 1. (PI. i.). 

 A deep water species recently taken off Botany Bay by the State Trawlers. It 

 ranges from the Mediterranean and neighbouring Atlantic to Japan and southern 

 Australia. It is a small species with primitive characters like the preceding. 



IV. Family Chlamydoselachidae. 



5. Chlamydosel^ohtjs Garrnan, Bull. Essex. Inst, xvi, 1884, p. 52 (anguineus). 

 5a. C. sp. Feilled-gilled Shark. Chlamydoselachus sp. Stead, P.L.S. 



N.S.W. xxxii, 1907, p. 554. 

 The inclusion of this widely distributed genus in this list is based upon some 

 remains found in Port Jackson. The typical species, C. anguineus, is a very 

 primitive shark first described from Japan, which grows to about six feet in length. 



V. Family Heterodontidae. 



A. Supraorbital ridges gradually decreasing in height posteriorly; enlarged 



lateral teeth not carinate. Heterodontus (6)- 



AA. Supraorbital ridges ending abruptly posteriorly; enlarged lateral teeth with 



distinct keels. Gyropleurodus(1)- 



6. Heterodontus Blainville Bull. Soc. Philom. viii, 1816, p. 121 (philippi). 

 6a. H. philippi. Port Jackson Shark. Squalus philippi Bloch & Schnei- 

 der, Syst. Ichth., 1801, p. 134; H. philippi McCoy, Prodr. Zool. Vict, 

 dec. xii, 1886. pi. 113. (PI. i.). 



