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NEW YORK STATE MUSEUM 



and pustulose glabella, the position of the eyes and the general 

 outline of the body as shown in the illustration. Dalmanites 

 p 1 e u r o p t y x [fig. 67] is characterized by a deeply lobed gla- 

 bella, which widens rapidly toward the front; by the strongly 



I 1 ! 



Fig-. 68 Dalmanites nasutus 



cresccntic outline Of the head, with the moderate lateral spines, 

 and by the large triangular pygidium. Another species, D. nasu- 

 tus [fig. 68], is characterized by a bifurcating anterior exten- 

 sion of the head, longer and sharper genal spines, and a pygidium 

 furnished with a long, narrow spine or telson. 



