PROCEEDINGS OF UNITED STATES NATIONAL MUSEUxM. [18rt5. 



EXPLANATION OF PLATE XXV. 



(For description see pp. 584-585.) 



Fig. 1. Skull of MesopJodon Stejnegeri, True. View from above. 



Fig. 2. Lateral view of the same skull. 



(Pul)lisIie(I by permission of tbe U. S. Commissioner of Fish and Fisheries.) 



