1 and 2. Photograph of the specimen of Aiii/>/iit>aniiis graiidiceps Cope, from the Mazon Creek shales. 

 X 1.5. Original in possession of Mr. L. E. Daniels, Rolling Prairie, Indiana. 



3. Specimen of S,ui>-of>leit>-a (Colosteiis) scntellata Xewberry, from the Linton Coal Measures. Thespecies 



was the first known of the Ohio Coal Measures Amphibia; at first ascribed by Newberry 

 to the fishes, but later correctl)' identified by Cope. X 1. Original in American Museum 

 of Natural History. 



4. The type of Diceratosaurus ( Ceraterptioii ) punctolincatiis Cope, from the Linton Coal Measures. X 1. 



Original in American Museum of Natural History. 



