FISHES. 485 



smaller as they travel south, for off the coast of Scania they 

 usually run three or four to the pound. Br. 7 ; D. 12 -f. 

 1,16 ; P. 18 ; V. 1,5 ; A. 1 + 1,10 ; C. 18. 



Nilsson observes, it is not improbable that the Spanish 

 mackerel has been taken here, and confounded with the 

 young thunny, on account of the number of spurious finlets. 



Gen. Tliynnus, Cuv. 



Finlets behind the dorsal and anal fins, nine ; dorsals 

 close together ; pectorals large ; a prominent ridge on the 

 sides of the body near the tail, and a corslet of small scales 

 on the breast. 



30. THYNNUS VULGARIS, Cuv. Thon Fisk. The Thunny. D. 



Is not so very rare off the Gothenburg coast, but they 

 generally run small, eight to ten inches long. It does 

 not appear to go further north than the south of Nor- 

 way, and only comes into the Sound accidentally, never 

 in the Baltic. D. 14+ 1,13; P. 33; V. 1,5; A. 2,12. 

 Colour never so handsome as in the mackerel. 



Gen. Xiphias, L. 



Nose elongated into a flat serrated bony sword, equal to 

 one-third of the length of the body ; one single dorsal high 

 in front, but in old fish all the middle rays disappear, leav- 

 ing a high fin in front over the pectorals, and another at the 

 tail root like two fins ; no ventrals, but the anal in the old 

 fish appears divided into two, like the dorsal. 



31. XIPHIAS GLADIUS, L. Svardfisk. The Swordfish. D. 



Is nearly confined in these seas to the low sandy 

 shores of South Sweden and Jutland. Nilsson remarks 

 that all the specimens he has seen have been large, 

 from eight to ten feet long. 



Gen. Caranx, Cuv. 



Body compressed, not round like the common mackerel ; 

 the curved lateral line armed with firm plates, forming a 

 ridge along the sides ; two distinct dorsals, with one spine 

 before the first ; a few spines before the anal fin. 



