GROWTH OF BLUEFIN TUNA 



41 



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D 



Figure 2. — -Centra of vertebrae of bluefin tuna. Arrows indicate annuli. A. Vertebra from fish 77.5 em. long taken off 

 Martha's Vineyard, August 1951 ; 2 annuli. B. Drawing of stained vertebra from a fish 104 cm. long, taken off Cape 

 Cod, October 1950; 3 anmili. Scale in figure 1 D is from the same fish. (Reproduced from fialtsoff (1952) by permis- 

 sion of the author and publishers.) C. Stained vertebra of fish 110 centimeters long taken off Cape Cod, October 

 1950; 4 annuli. D. Vertebra of giant tuna taken off Cape Cod; about 11 annuli. Annuli beyond the 9th or 10th are 

 usually small and indistinct and disappear soon after dissection. (A, C, and D, unrelouched.) 



