Zoology.'] 



NATURAL HISTORY OF VICTORIA. 



[^Fishes. 



I have not yet met with the Mackerel without a swim-bladder 

 mentioned by some authors from our seas. 

 The detailed measurements are as under : — 



Measurements. 

 Length from snout to distal end of caudal 



„ of caudal ... 



„ from snout to anterior edge of orbit ... 



„ of orbit 



„ of head from snout to end of operculum 



„ from snout to anus (measured along ventral 



„ from anus to end of caudal ... 



„ from snout to base of pectoral 



„ from snout to origin of 1st dorsal 



„ „ „ 2nd dorsal 



„ „ „ ventral fin 



„ of pectoral 

 Height of 1st dorsal 



„ 2nd dorsal 



Length of anal 



„ ventral fin ..'. 



Width between eyes 

 Depth of body in front of dorsal 

 Thickness of body in fi-ont of dorsal 



edge) 



This beautiful fish occurs rarely in Hobson's Bay, generally iu 

 the month of June, and in considerable numbers when it does 

 appear. 



Explanation op Figuees. 



Plate 28. — Fig. 1, specimen of usual coloring when alive, two-thirds of the natural size. 

 Fig. la, section near tail. Fig. 16, interior of mouth, one-fifth larger than nature, to show the 

 number and arrangement of the teeth. Fig. \c, top of head to show tlie form of the white 

 forehead. Fig. \d, section in front of dorsal. Fig. le, some of the teeth magnified. Fig. \d, 

 scale of lateral line, magnified. (The spots on lower part of sides and belly axe slightly too large 

 and dark). 



Frederick McCoy. 



[44] 



