■ i 



J^tmoiis of tb museum of Comgaratifai ^'obbgn 



AT HARVARD COLLEGE. 



EiGUTY-TiiuEE Plates to Accompany. 



Vols. XX. and XXI. 



THE NORTH AMERICAN 



CRINOIDEA OAMERATA. 



By CHARLES WACHSMUTH and FRANK SPRINGER. 



EIGHTY-THREE PLATES. 



CA>fBinDGE. U.S.A.: 



Printcti for tljc iHuscunu 



May, 1897. 



