U. S. NATIONAL MUSEUM 



BULLETIN 36 PL. XXI 



Fig. 1. Tursio jieronii (hacepede). 



(From Gray, Synopsis of the Whales and Dolphins, 1868, pi. 15, fig. 1.) 



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Fig. 2. Tursio peronii (Lacepede). 

 (Fronn Van Beneden and Gervals, Osteographie, pi. 38, fig. 3.) 



Genus TURSIO. 



