CRIXOIDS AXD BLASTOIDS. 201 



CLASS PELMATOZOA. 

 ORDER BLASTOIDEA. 



FAMILY CODASTERID.E. 

 GENUS OROPHOCRINUS. 



1864. Orophocrinus, Von Seebach. Nachr. k. Gesellsch. zu Gottingen, p. 100. 



1879. Orophocrinus, Zit;eL Handb. d. Paheont I, p. 434. 



1882. Orophocrinus, Ether, and Carp., Ann. and Mag. Nat. Hist (Apr., 1882), p. 249. 



1883. Orophocrinus, Ether, and Carp., Ibid. (Apr., 1883), p. 226. 



1885. Orophncrinns, Wachmuth, GeoL Rep. Illinois. VoL VH, p. 317. 



1886. Orophocrinus, Ether, and Carp., Blast. Catalogue, p. 2S3. 



Syn. Pentremitfs. (in part) Munster.1839, Beitrage z. Petrefactenk, p. 1 ; also DeKoninck 

 and Lehon, 1853, Recherch. sur les Crin. du Terrain Garb, de laBelgique, p. 189; also Owen 

 and Shumard, 1&52. GeoL Rep. of Wise., Iowa and Minn., p. 333. 



When Meek and Worthen. in 1869, proposed the name Codo- 

 nitvs for Owen and Shumard's Penti-emitf*$ st^lliformis and their 

 new species f'\ ^j\-n-i]is. they were not aware that Von Seebach 

 had previously proposed for the former the <jenus Orophocrinus, 

 which, having- priority, must be accepted. Since then Etheridge 

 and Carpenter have placed under Orophocrinus several Euro- 

 pean species, which had likewise heretofore been referred to 

 Pentremitee. 



OROPHOCRIXUS roxirrs (nov. sp.) W. & Sp. 



PI. XV, Fig. 1. Specimen with the pinnules and part of column preserved. 

 PL XV, Fig. 2. Another specimen, profile view. Enlarge 1 two diameters. 

 PL XV, Fig. 3. The same specimen from the ventral side. Enlarged as above. 



This and the succeeding species are readily distinguished from 

 all othpr known species of this genus by their more slender 

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