PLATE 5 



Dinichthys dolichocephalus sp. nov. 



Head shield, mandibles and various plates of the dorsal and ventral 



armoring in natural association on a single slab, x y. 

 Naples shale ; Sturgeon Point, near Buffalo, N. Y. 

 Original in Cabinet of the Buffalo Society of Natural Sciences 

 Dinichthys pustulosus Eastm. 



(^.^phues^andiO 

 Page 130 



External aspect of left mandibular ramus, partly restored, x ^ 

 Oneonta sandstone ; Delhi, Delaware co., N. Y. 

 Original in New York State Museum 

 External aspect of left mandibular ramus, x ^ 

 Hamilton limestone, Milwaukee, Wis. 

 204 



