FIG. 71. SKULL OF ADULT MALE MACRORHINUS ANGUST1ROSTR1S, FROM GUADALUPE 



ISLAND, LOWER CALIFORNIA. 



Extreme length 23Sg inches, extreme zygomatic width 13';s inches. 



FIG. 72. SKULL OF ADULT MALE MACRORHINUS LEONINUS, KERGUELEN ISLAND, 



ANTARCTIC. 

 Extreme length 22' 4 inches, extreme zygomatic width 14 Vi inches. 



