Bothriolepis nitida Leidy 



(See plate 3) 

 Page so 



1 " Shoulder of arm " in articulation with ventrolateral plate. Natural 



size 

 Chemung beds ; Blossburg, Tioga co., Pa. 

 Original in New York State Museum 



Dipterus fleischeri Newb. 



Page 162 



2 Right upper dental plate. Natural size 

 Oneonta beds ; Franklin, Delaware co., N. Y. 

 Original in New York State Museum 



Ctenacanthus chemungensis Claypole 



Page 77 



3 Superficial ornamentation of spine enlarged, x 3 



Chemung beds ; between Friendship and Nile, Allegany co., N. Y. 

 Original in New York State Museum 



Dinichthys lincolni Claypole 



Page 129 



4 Right vomerine tooth, viewed from the front. Natural size 

 Marcellus shale ; Geneva, Ontario co., N. Y. 



Holotype in the New York State Museum 



5 Inner lateral aspect of same specimen, showing fractures due to 



mechanical deformation. Natural size 



6 Idt'd. Inferior aspect. Natural size 



Asterolepis clarkei sp. nov. 



Page 40 



7 Mold of interior surface of posterior dorsal median plate. Natural 



size 

 Chapman sandstone ; Chapman Plantation, Aroostook co.. Me. 

 Original in New York State Museum 



8 External surface of preceding. Natural size 



208 



