U S. NATIONAL MUSEUM 



PROCEEDINGS. VOL, 83 PLATE 26 



PLESIPPUS SHOSHONENSIS. 



Skull (immature), I'.S.X.M. no. 12494: 1, Dorsal view; 2, lateral view; 3, palatal view. About one-fifth 

 iiattiral .size. Ilafrerman lake beds, ui)i)er riioceue, Maho. 



