Zoology."] 



NATURAL HISTORY OF VICTORIA. 



[^Fishes. 



In size, general character, and coloring, this is closely related to 

 the English Tope, Galeus canis^ in which, as in the present species, 

 I find, on comparing examples of the Australian and English fish, 

 that the two hinder gill-openings are behind the anterior margin of 

 the pectoral. The pectoral is much longer, broader, more falcate, 

 and placed farther back in the English G. cards than in the 

 Australian Tojdo. The 1st dorsal of the Australian fish is more 

 near to the pectoral, and the pectoral and hind lobe of the caudal 

 and the 1st dorsal are smaller, and the 2nd dorsal and anal in the 

 Australian fish are not so close to the caudal ; the caudal being 

 much larger in the English species than in its Australian represen- 

 tative. To render some of these comparative differences more 

 clear, I give the relations in a tabular form of some of the measure- 

 ments of the two species, taking the total length in each case as 

 100. The length of B was 5 feet ; it had lower and upper teeth 

 serrated. The smaller male noted below, marked C, was 4 feet 7 in. 

 9 lines long ; serratures on lower teeth. D, a female, 4 feet 5 in. 

 6 lines long : — 



This is a common Dog-fish in Hobson's Bay, usually from four 

 to five feet long, of a graceful tapering form, with a long, semiellip- 

 tical snout, small fins, except the upper lobe of the caudal, which 

 is large, and with a distinct notch on its under margin. It is one of 



Dec. VII. [ 17 ] C 



