U. S. NATIONAL MUSEUM 



BULLETIN 36, PL. XXII 



■^^Sil'^ 



Fig. 1. PACIFIC RIGHT- WHALE PORPOISE. 

 Tursio borealis (Peale). 



(From Scammon, Marine Mammalia, 1874, pi. 19, fig. 4) 



Fig. 2. PACIFIC RIGHT- WHALE PORPOISE. 



Tursio borecdis (Peale). 

 (From skull No. 8160, in the U. S. National Museum.) 



Genus TURSIO. 



