lT.i PALEONTOLOGY OF NEW YORK. 



of the matrix of the specimen, but otherwise it i.s a well 



1 representative of the species. At the time of the preparation 



ption the parts of the animal had nol been found together, and 



domen and post-abdomen of another individual were taken as the 



species Ceratiocaris armatus. Material which has come into the 



ion of the State Museum since that date, establishes beyond a doubt the 



the two species. Both descriptions were published at the same 



nd although that of tlie latter species precedes that of the former by 



two pages in the letterpress of the report referred to, it appears wiser to 



cognition to the specific name pundatus, a- C. pundatus was founded 



upon the portion of the animal most characteristic and important for specific 



inination. Echinocaris pundata shows some points of general similarity 



the species E. sublavis, /.'. multinodosa, Whitfield, and /<]. socialis, Beecher, 



iilv distinguished from them by the size and disposition of the nodes, 



irve of the lateral carinas on the carapace, the length of the abdominal 



somites and the character of their spinous processes. 



ibufion. Hamilton group. In the black shales at Pratt's Falls, near 

 Pomp I iter and at Delphi, and in the sandy shales, near Fabius, Onondaea 

 county ; in the higher shales at Menteth's Point and Tichenor's Glen, Canan- 



j and near Norton's Landing, Cayuga hake. 



; 0F Puvllocaiuda dissociated with Echinocaris punctata, in the 



finch has produced the greatest number of specimens, viz., Pratt's 



Pompe^ Center, Onondaga county, large masticatory organs 



' 'I'" 1 " abundantly, which, judging from a general similarity 



found in situ in this species, may be regarded as undoubtedly 



I iesof the Phyllocarida. Beecher has described and 



these bodies (ft*, eft), and has indicated the fact that if bearing 



l "' , "" M , '" *»I»ce as do the mandibles in E. pundata, they 



longed either to large individuals of this species or to some 

 unknown to us. 



