EXPLANATION OF PLATE XXVII. 
66 
Fic. 1. Posterior View of the Back Part of the Skull of Specimen No. $82, Carnegie Museum 
Catalogue of Vertebrate Fossils. 
Fie. 2. Anterior View of the Back Part of the Skull of Specimen No 
662 
Catalogue of Vertebrate Fossils. 
. £82, Carnegie Museum 
274 
