North American Fauna No. 55. U. S. Dept. of Agriculture, Biological Survey 



PLATE 50 



B3873M (2); B3864M; B3862M ; B3863M 



KILLERS, GRAMPUS, AND PORPOISES. 



L, Pacific killer (from Scammon); B, black killer (from Scammon); C, common grampus (from Flower, 

 P. Z. S. London); D, harbor porpoise (from U. S. Nat. Mus., Bull. 36); E, Dall's porpoise (from U. S. 

 Nat. Mus., Bull. 36). 



