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



ISLAND, LOWER CALIFORNIA. 



Extreme length 235^ inches, extreme zygomatic width 137,-^ inches. 



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



ANTARCTIC. 

 Extreme length 22 ^^ inches, extreme zygomatic width 14^2 inches. 



