FISHERY BULLETIN: VOL. 70, NO. 1 

 Table 2. — Summary of red pigment cells in larval tunas from Hawaiian waters, August-September 1967. 



* Less than 2% occurrence omitted. 



I I 



I mm 13. 4mm 



Figure 1. — Larval stages of Thunnus albacares, I. 

 (From Matsumoto, 1958. Lengths have been converted 

 from total to standard.) 



first observed on the upper jaw tip in larvae 

 about 5.0 mm SL and on the lower jaw tip at 

 about 9.0 to 10.0 mm SL (Figures 3 and 4, re- 

 produced from Ueyanagi, 1969). Consequently, 



Figure 2. — Larval stages of Thunnus albacares, II. 

 (From Matsimioto, 1958. Lengths have been converted 

 from total to standard.) 



all larvae between 4.5 and 7.0 mm SL having 

 black pigment cells only on the lower jaw tip, 

 and larvae between 7.0 and 9.0 mm SL having 

 black pigment cells on the tips of both jaws were 

 considered as T. albacares. All larvae between 

 5.0 and 9.0 mm SL having black pigment cells 



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