U. S. NATIONAL MUSEUM 



BULLETIN 36, PL. XXXIII 



Fig 1 Ceiihalorhi/nchns hectori (yanBeneden). 



(From Van Beneden, Bulletin de I Academie Royale de Belgique, 3d series, i. 1881, pi. 2.) 



Fig. 2. Cephalorhynchus eutropiu (Grayi. 



(From Gray, Synopsis of the Whales and Dolphins, 1 868, pi. 34 ) 



Genus CEPHALORHYNCHUS. 



