244 DESCRIPTIVE CATALOGUE OF AUSTRALIAN PISHES, 



at the sides. The colour is reddish ahove the median line of the 

 body which is well marked by a bluish silvery streak, beneath it 

 is silvery, the pectoral fin is distinctly tipped with black, and the 

 other fins are the same to a less extent. 



Port Jackson. Length eight inches. 



Genus Scombresox, Lacep. 



Both jaws prolonged into a long slender beak, the upper part 

 being formed by the intermaxillaries ; both jaws with a series of 

 extremely minute teeth. Body elongate, compressed, slender, 

 covered with small thin deciduous scales. A number of detached 

 unlets behind the dorsal and anal fins. Gill-openings very wide. 

 Intestinal tract simple, without pyloric appendages. Air-bladder 

 large. 



Atlantic and Pacific Oceans. 



866. Scombresox Porsteri, Cuv. & Val. 



Gunth., Cat. Pishes VI., p. 258.— Hutton, Fishes, N. Zeal., p. 53. 



D. 10/v. A. 11/vii. P. 15. V. 6. 



" Length equal to four and a half times that of the head, or 

 ten times the height of the body ; length of the head about one 

 and two-fifths that of the snout ; lower jaw longer ; base of 

 ventrals half way between the root of the caudal and the anterior 

 margin of the eye ; upper pectoral ray very broad. Above 

 shining plumbous-blue, below silvery- white." — (Hutton). 



Melbourne (Castelnau). Sydney (Macl. Mus.). 



Genus Hemiriiampiius, Cuv. 



The lower jaw is prolonged into a long slender beak; the 

 upper is short, the intermaxillaries forming a triangular more or 

 less convex plate. Both jaws with a narrow band of minute 

 teeth. Body elongate slender, covered with large or moderate 

 scales. All tho dorsal and anal rays connected by a membrane. 



