2 -ENDEAVOUK" SCIENTIFIC RESULTS. 



II.— DESCRIPIION OF I HE GENERA AND SPECIES. 



Family HEXANCHIDyE. 



Genus Heptraxchias, Rafinesque. 



Heptranchias perlo, Bonnatene. 



Seven-gilled Shark. 



(Plate i., fig. I.) 



Squalus perlo, Bonnaterre, Encycl. Meth., Ichth., 1788, p. 10. 

 Squalus cinereus, Gmelin, Linn. Syst. Nat., 1789, p. 1497. 

 Heptanchus cinereus, Miiller & Henle, Plagiost., 1839, p. 81, 



pi. XXXV. 



Notidanus cinereus, Giinther, Brit. Mus. Cat. Fish., viii., 

 1870, p. 398. 



The collection includes seven examples which I am unable 

 to separate from the European H. perlo, Bonnaterre. Iheir 

 teeth agree exactly with INIiiller and Henle's figure, and they 

 also fit the description fairly well. I forwarded a photograph 

 of one of the specimens, together with some notes, to Mr. C. 

 Tate Regan for his opinion, and he has favoured me with the 

 following reply: — "So far as I can judge from your photo- 

 graph the shark is H. cinereus." 



These specimens are readily distinguished from H. ituiicus, 

 Agassiz, the only other Australian species, by the following 

 ■characters : — 



Head broad, snout broadly rounded ; a single median tooth 

 in the upper jaw ; colour greyish with darker spots : — indicus. 



Head narrow, snout pointed ; no single median tooth in the 

 upper jaw ; colour uniform grey : — perlo. 



.All the specimens were taken in the one haul in 60-70 

 fathoms, sixty miles south of Cape Everard, X'ictoria. 



Famiiv HElERODON'rilX^. 



Genus Hetkkodontus, Bhiitiville. 



Heterodontus philifpi. Block and Schneider. 



I'ort Jackson Shark, Bullhead Shark, Oyster Crusher. 



Squalus philippi, Bloch and Schneider, Syst. Ichth., 1801, 



P- 134- 

 Cesiracion philUpi, Regan, .Ann. Mag. Nat. Hist. (8), i., 

 1908, p. 495. 



