PLATE 5 



Dinichthys dolichocephalus sp. no v. 



Page 135 



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



armoring in natural association on a single slab, x _^ 

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

 Original in Cabinet of the Buffalo Society of Natural Sciences 



Dinichthys pustulosus Eastm. 



{See plates 2 and 12 ) 

 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 



