EXTERNAL CHARACTERS OF BLUE WHALES 



3°9 



"I — ~~^ r 



•J 3 4 



PERCENTAGE VALUE OF MEASUREMENT 



Fig. 45. Male Blue and Fin whales. Variations of measurement No. 13. 

 Anus to reproductive aperture. (Whales of all sizes.) 



~r 



2 3 4 



PERCENTAGE VALUE OF MEASUREMENT 



Fig. 46. Blue whales. Variations of measurement No. 15. Dorsal fin, length at base. 



(Whales of all sizes.) 



Males. 



Females. 



