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NEW YORK STATE MUSEUM 



and pustulose jxlabclla, the ]K)sitioii of llie eyes and the general 

 outline of the body as sliown in the illustration. D a 1 m a n i t e s 

 p 1 e u r o J) t y x [fig. 07] is characterized by a deeply lobed gla- 

 bella, which widens rai)idly toward the front; by the strongly 



Fig". G8 Dal m unites n a s u t ii s 



cresccntic oulliMc ()f llic liead, with the moderate lateral spines, 

 and by Ihc hii.iLic Irian.milar ]»ygidiuni. Another species, D. n a su- 

 tuH I lig. ()8|, is characlci'ized by a bifurcating anterior exten- 

 sion of Ihe head, lon^i r and shai'per genal spines, and a pygidiura 

 fni-nishi'd w i(h a lonii. narrow s]»ine or telson. 



