U. S. NATIONAL MUSEUM 



BULLETIN 36, PL. XXX 



Fig. 1. Sagmatias amblodon Cope. 



(From the type-skull, No. 3887 in the U. S National Museuna.) 



Fig. 2. Feresa intermedia Gray. 



(From Gray, Synopsis of the Whales and Dolphins, 1868, pi. 8.) 



Genera SAGMATIAS and FERESA. 



