4 OONTKNTS. 



Faunal uvidcin-c ;inil iMirrclutinn^C'iintinuril. 



Pennsylvanian — ('(intiinu'il. Page. 



San Juan refri( )n 24.") 



( )uray 256 



Dolores Kiver region 257 



Summary 258 



De3crl]>tions ( if Hjiecies _ 26S 



^lississijipian 269 



Pennsylvanian 317 



riates 481 



Register of localities 519 



Index '. 533 



