io8 



DISCOVERY REPORTS 



38 



IB 



ID 12 14 



Total Length in metres 



Fig. II. Sperm whale. Measurement No. 17. Anterior end 

 of lower border to tip of flipper. 



28- 



a 



Males 

 Females 



18 



10 12 14 16 



Totdl Length in metres 



Fig. 12. Sperm whale. Measurement No. 20. Length of 

 severed head from condyle to tip. 



Total Length in metres 



Fig. 13. Sperm whale. Measurement No. 21. 

 Greatest width of skull. 



Fig. 



a 10 12 14 16 



Total Length in metres 



14. Sperm whale. Measurement No. 25. 

 Height of head. 



this table and these figures, and include those obtained from whales both at South 

 Georgia and South Africa ; they indicate a homogeneous population and no admixture 

 of races with structural differences. 



COLOUR 

 The coloration was recorded in seventy Sperm whales, sixty males and ten females. 

 In 70 per cent of these whales the colour was a nearly uniform slate grey or dark 

 bluish grey all over the body, with the exception of specific white or light grey markings ; 

 in 25-7 per cent the colour was considerably lighter on the under surface of the head and 

 lower jaw, and in 4-3 per cent it was conspicuously lighter over the greater part of the 

 ventral surface (Plate IV, figs. 1-3). 



