142 CTSTIDS AND BLASTOIDS. 



tally by a projectiDg rim or margin. Top stem- joints often 

 anchylosed together and filling the columnar cavity; column 

 unknown. Surface marked by fine lines. 



Horizon and localities. — Lower Carboniferous, Lower 

 Burlington limestone : Hannibal, Louisiana, Sedalia, Spring- 

 field. 



Orophocrinus campanulatus C Hambach ). 

 Codonites campanulatiis Hambach, 1884: Trans. St. Louis Acad. Sci., vol. 



ly, p. 553, pi. D, figs. 8-9. 

 Orophocrinus stelliformis var campanulatus Ethridge & Carpenter, 1886 : Cat 



Blastoidea, p. 289. pi. xvi, fig. 5. 



Closely related to 0. stelliformis^ and perhaps merley a 

 varietal form. The calyx is pyriform instead of stellate. 



Horizon and localities — Lower Carboniferous, Lower 

 Burlington limestone : Sedalia. 



DOUBTFUL SPECIES OF BLASTOIDS. 



Coc^asier^'ra^zosMs Miller, 1880 : Jour. Cincinnati Soc. Nat. Hist. , vol. 11, 



p. 257. 



Lower Carboniferous : Keokuk and Kew Bloomfield. A cast. 

 Too imperfect for recognition. 



