Field Columbian Museum. 



Publication 123. 



Geological Series. Vol. II, No. 10. 



NEW CRINOIDS FROM THE 

 CHICAGO AREA. 



BY 



Arthur Ware Slocom, 



Assistant Curator, Section of Invertebrate Paleontology. 



Oliver Cummings Farrington, 

 Curator, Department of Geology. 



Chicago, U. S. A. 



October 31, 1907. 



Issued Jan. 3 1908 



