EXTERNAL CHARACTERS. 



745 



Breadth of tail at root 



Length of posterior flippers 



Expansion of posterior flippers . 



Length of fore flippers 



Width of fore flippers 



No. 1. 



2 



1 7 

 1 8 

 1 5 

 6 



Round extremit y of body at root of tail 1 6 



No. 2. 



2 



1 7 



1 8 



1 2 



6 



1 7 



FIG. 58. Macrorhiims angustirostris. No. 4704, Nat. Mns. ; i nat. size. 



No. l. 



From tip of nose to corner of mouth 07 08 



Opening of mouth 4$ 4* 



From tip of nose to eye 08 09 



From tip of nose to fore flippers 2 7 30 



Length of fissure between the eyelids If 



