PLATE 5 



Dalmanites (Probolium) tridens Hall 



Page 129 



1 An entire and undistorted cephalon with shovel-shaped, slightly trifid 



snout 

 New Scotland beds. Clarksville, N. Y. 

 Collected by the late Prof. C. E. Beecher, 1887, (while a member of 



the State Museum staff) and now in the Yale University Museum 



Dalmanites perceensis nov. 



(See plate 4) 

 Page 126 



2 An entire pygidium with clearly defined sulcate ribs, coarse and irregu- 



larly scattered nodes on the sides and regularly paired nodes along 

 the axis 

 Grande Grhve limestone. Perce Rock 



262 



