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 C ' houteauensis , Miller. Chouteau. 



1892. Agaricocrinus Blairi. Chouteau. 



1892. Agaricocrinus germanus. Chouteau. 



1892. Agaricocrinus Sampsoni. Chouteau. 



II. 



brevis, Hall. 



1858. Agaricocrinus 



1858. Agaricocrinus 



1858. Agaricocrinus 



1860. Agaricocrinus 



1860. Agaricocrinus 



1861. Agaricocrinus 

 1861. Agaricocrinus corrugatus 



pyramidatus . 

 stellatus. 

 corniculus . 

 geometricus. 

 Jiscellus. 



L. Burlington. 

 L. Burlington. 

 L. Burlington. 

 L. Burlington. 

 L. Burlington. 

 L. Burlington. 

 L. Burlington. 



III. 



1896. Agaricocrinus Adamsensis, Miller and Gurley. 



Burlington. 

 Burlington. 



1896. Agaricocrinus Hodgsoni. 



IV. 



1896. Agaricocrinus Illinoisensis, Miller and Gurley, 



Burlington. 



1861. Agaricocrinus injlalus, Hall. 

 1861. Agaricocrinus planoconvexus. 

 1891. Agaricocrinus decomis. 

 1897. Agaricocrinus convexus. 



Burlington. 

 Burlington. 

 Burlington. 

 Burlington. 



VI. 



1861/ Agaricocrinus ornotrema. Hall. 



1897. Agaricocrinus bellatrema. 



1897. Agaricocrinus bellatrema, var. major. 



U. Burlington. 

 U. Burlington. 

 U. Burlington. 



