60 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 76 



i 



PLATE 3 



Left maxillary bone removed from skull and viewed from behind to show 

 features of similarity between a sea-lion, fig. i, a furseal, fig. 2, and a baleen 

 whale, fig. 3, and those between a fox, fig. 4 and two toothed cetaceans, 

 figs. 5 and 6. 



Fig. I. Eumctopias. No. 239330, U. S. Nat. IMus- 



Fig. 2. Callorhinus. No. 239329, U. S. Nat. Mus. 



Fig. 3. BalcEtioptera. 20931, U. S. Nat. Mus. (The missing lacrimal lay 



in the depression of the maxillary in front of the jugal, as may be 



seen in fig. 3 of plate 6.) 

 Fig. 4. Vulpcs. No. 239333, U. S. Nat. Mus. 

 Fig. 5. Physctcr, very young. No. 49488, U. S. Nat. Mus. 

 Fig. 6. Grampus. No. 15773. U. S. Nat. Mus. 



