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THY 



ALB 



Figure A-2.— Lateral view of skulls of Thwmus species, 

 (top) T. alalunga, skull length 151 mm.; (middle) T. 

 thynnm, 103 mm.; (bottom) T. thynnus, 335 mm. 



Figure A-3.— Lateral view of skulls of riuainits species, 

 (top) T. obesus, skull length 200 mm.; (middle) T. alba- 

 cares, 113 mm.; (bottom) T. alhacarcs, 164 mm. 



130 



U.S. FISH AND WILDLIFE SERVICE 



