124 " ENDEAVOUR " SCIENTIFIC RESULTS. 



and habits. It is evidently near T. trachurus, Linn., but 

 its relation to that species can only be determined by a 

 comparison of series of specimens from European and 

 Australian seas. 



Hutton has included the name T. novce zelandice, among 

 others, in the synonymy of the New Zealand species, which 

 he identified as T. trachurus. He credited this name to 

 Cuvier and Valenciennes, but I have failed to find any 

 reference to it other than his own. The New Zealand fish, of 

 which I have examined a specimen, appears to be neither 

 T. trachurus nor T. declivis, and I therefore accept the name 

 T. novce-zelandice for it. I also identify the Cowanyoung and 

 the Horse Mackerel of Australia and Tasmania with Hutton's 

 species. 



The accompanying figures illustrate the differences between 

 T. novce-zelandice and T. declivis. In the former the body is 

 elongate and cylindrical, the depth in adults being 4-7-5-2 

 in the length from the premaxillary symphysis to the end 

 of the middle caudal rays ; the lateral line scutes are broader 

 and more numerous than in T. declivis, while the colour is 

 dark-greenish blue on the back and silvery below. In 

 fifteen specimens I count the following : — D. viii. 1/30-35 ; 

 A. ii. 1/28-30 ; L. lat. 29-35 + 6-8 -f 39-42. Length to 

 eighteen inches. 



T. novce-zelandice occurs in large shoals in the open sea of 

 southern Australia and Tasmania, which occasionally enter 

 harbours and estuaries. The young are found in the bays and 

 harbours of both New South Wales and Tasmania, and, 

 according to Johnston, they form the chief food of the 

 Tasmanian kingfish, Jordanidia solandri, Cuv. & Val. 

 Twenty-three specimens, 95-405 mm. long, are preserved from 

 the following localities : — 



Between Gabo Island and Cape Everard, Victoria, about 

 forty miles from land, 150-250 fathoms. 



Off the east coast of Flinders Island, Bass Strait. 



Bay of Fires, Tasmania, 40 fathoms ; 30th June, 1914. 



Circular Head, North-western Tasmania ; 5th September, 

 1911. 



Off the mouth of the Murray River, South Austraha, 20 

 fathoms ; 17th August, 1909. 



Great Australian Bight, 100-120 fathoms and surface ;. 

 March, 1912. 



Between Cape Naturaliste and Geraldton, Western Aus- 

 tralia, 20-100 fathoms. 



i 



