ceiNOiDS. J 77 



Eretmocrinus calyculoides (Hall). 



Plate xxiil, fig, 13. 



Actinocrinua calyculoides Hall, IStiO : Geol. Iowa, vol. I, Supp. p. 17. 

 Batocrinus (Ereti».ocrinus) calyculoides Meek & Worthen, 1873: Geol. Sar. 



Illinois, vol. V, p. 368. 

 Eretmocrinus calyculoides Wachsmuth & Springer, 1881: Proc. Acad. 



Nat. Sci., PWla.. p. 346. 



Calyx of medium size, turbinate below, inflated above. 

 Basals three in number, about equal in size, extended below 

 into a broad, horizontal, peripheral rim. Radials and other 

 calyx plates as in Batocrinus. Arms very long, spatulate, and 

 infolded. Unornamented. 



Horizon and localities. — Lower Carboniferous, Upper Bur- 

 lington limestone: Ash Grove. 



Eretmocrinus differs from Actinocrinus in the same way as 

 Batocrinus — from the latter in the number and arrangement of 

 the arms, which also have a much greater length, and a broadly 

 spatulate form; in the form of the calyx, the extended basal 

 rim, the preponderating ventral portions of the calyx, the ec- 

 centric position of the anal tube, its inflated character and its 

 disposition to bend sideways. ( Wachsmuth & Springer.) 



Eretmocrinus verneuilianus (Shumard). 



Plate xxiii, flg. 9. 



Actinocrinus verneuilianus Shunaard, 1855 : Geol. Sur. Missouri, Ist and 2d 



Ann. Repts., pt. ii, p. 193, pi. A, figs. la-b. 

 Batocrinus {Eretmocrinus) verneuilianus Meek & Worthen, 1873: Geol. 'Sur i 



Illinois, vol. V, p. 368, pi. iv, figs. 3-4. 

 Eretmocrinus verneuilianus Wachsmuth & Springer, 1881: Proc. Acad. 



Nat. Sci., Phila., p. 347. 



This species has a small biturbinate calyx, with an immense, 

 long anal tube. The plates have a central node. 



Horizon and localities. — Lower Carboniferous, Upper Bur- 

 lington limestone : LaGrange, Palmyra, Helton, Hannibal, 

 Louisiana, Ste. Genevieve, Rocheport (Boone county), Spring- 

 field, Ash Grove. 



