196 Bulletin Wisconsin National History Society. [Vol. 9, No. 4. 



Cryptodiscus Hall. Niagara (SO.) 



Twentieth. Ann. Kept. N. Y. State Cab. of Nat. Hist., Hall, 1867, 



pi. 11, fig. 18. 

 The Jonr. of Geol., Weller, 1897, Vol. 5, pt. 8, p. 803, pi. a, figs. 1-5, 

 pi. B, figs. 6, 7. 



Obs. See CalUcrinus cornutus, Weller, 1900, Bull. 4, pt. i„ 

 The Chicago Acad, of Science. 

 Locality — Racine, Wis. 

 Type — Am. Mus. of Nat. Hist. 



Cyathocrinus N. s. Hall. Niagara (Sil.) 



Geol. of Wis.. Hall, 1862, p. 431. 

 Locality — Racine. Wis. 

 Type—? 



Cyathocrinus cora Hall = Crotalocrinus corn. 



Cyathocrinus waukoma Hall = Lecanocrinus wauJcoma; 



Eucalyptocrinus armosus McChesney = Siphonocrinus armosus. 



Eucalyptocrinus cornutus Hall = CalUcrinus cornutus. 



Eucalyptocrinus cornutus var, excavatus Hall = CalUcrinus cornutus. 



Eucalyptocrinus crassus Hall. Niagara (Sil.) 



Trans. Alb. Ins.. Hall, 1862, Vol. 4, p. 197. 



Eighteenth Ann. Rept. N. Y. State Cab. Nat. Hist., Hall, 1864, 

 p. 323, pi. 14, figs. 2, 3. 



Obs. Other specimens of the series of the types are from 

 Waldron, Ind. 

 Locality — Racine, Wis. 

 Types — Am. Mus. of Nat. Hist. 



Eucalyptocrinus obconicus Hall. Niagara (Sil.) 



Eighteenth Ann. Rept. N. Y. State Cab. Nat. Hist., Hall, 1864, 



p. 323, pi. 11, fig. 1. 

 Locality — Racine, Wis. 

 Type— Am. Mus. of Nat. Hist. 



