180 



Trans. Acad. Sci. of St. Louis. 



synonyms. Forty- two species have been described which 

 can easily be reduced to ten. The following is a list of the 

 species with their synonyms and geological formations. 



I. 



1892. Agaricocrinus ChouteauensiSf Miller. Chouteau. 



1892. Agaricocrinus Blairi, Chouteau. 



1892. Agaricocrinus germanus. Chouteau. 



1892. Agaricocrinus Sampsoni, Chouteau. 



II. 



1858. Agaricocrinus brevis, Hall. 

 1858. Agaricocrinus pyramidatus. 

 1858. Agaricocrinus stellatus. 

 1860. Agaricocrinus corniculus. 



1860. Agaricocrinus geomelricus, 



1861. Agaricocrinus fiscellus, 

 1861. Agaricocrinus corrugatus. 



L. Burlington. 

 L. Burlington. 

 L. Burlington. 

 L. Burlington. 

 L. Burlington. 

 L. Burlington. 

 L. Burlington. 



m. 



1896. Agaricocrinus Adamsensis^ Miller and Gurley. 



Burlington, 

 1896. Aparicocrinus Hodgsoni. Burlington, 



Agaricocrinus Hodgsoni. 

 IV. 



1896. Agaricocrinus Illinoisensis, Miller and Gurley, 



V. 



1861. Agaricocrinus inflatus, Hall. 

 1861. Agaricocrinus planoconvexus. 

 1891. Agaricocri7ius decornis. 

 1897. Agaricocrinus convexus. 



Burlington, 



Burlington. 

 Burlington . 

 Burlington . 

 Burlington. 



VI. 



1861. Agaricocrinus ornotrema, Hall. U. Burlington. 



1897. Agaricocrinus hellatrema. U, Burlington. 



1897. Agaricocrinus hellatrema, \2iY. major. U.Burlington. 



