DISCOVERY REPORTS 



41 



-I r 



43 45 47 49 51 



Pencenbge of Total Length 



Fig. 51. Sei whale. Variation of measurement No. 11. Notch of flukes to umbiUcus. 



"I 1 r 



51 53 55 57 



Percenfdge of Total Length 



59 



Fig. 52. Sei whale. Variation of measurement No. 12. Notch of flukes to end of system of ventral grooves. 



