112 



NEW YORK STATE MUSEUM 



Summary 



Total species recorded from the Guelph fauna of New York - - - - - 71 



From Shelby - .... 52 



From Rochester - .... - 52 



Common to upper and lower Shelby horizons - 10 



upper Shelby and Rochester - - 25 



lower Shelby and Rochester 14 



Shelby and Canadian Guelph - - 26 



upper Shelby and Canadian Guelph - 15 



lower Shelby and Canadian Guelph - 13 



Rochester and Canadian Guelph - 27 



New York and Canadian Guelph - 31 



Shelby and Niagaran faunas of New York - - - 17 



Rochester and Niagaran faunas of New York - - 16 



New York Guelph and Niagaran faunas 19 



Shelby Racine, and Waukesha limestones - 12 



Rochester, Racine and Waukesha limestones 8 



New York and Wisconsin Guelph - - 13 



Species at Shelby not recorded from Rochester - 19 



Rochester not recorded from Shelby - 18 



In considering the relative prevalence of the various classes of organ- 

 isms in these manifestations of the Guelph fauna in New York we observe 

 that the several classes have the following distribution : 



