214 THE CRINOIDEA CAMERATA OF NORTH AMERICA. 
cup; the mouth quite excentric, and the posterior ambulacra considerably 
longer. 
Horizon and Locality. — Same as last. 
Type in the collection of W. and Sp. 
Remarks. — This species is readily distinguished from the preceding 
species by having but two arms to the ray from the calyx, which, however, 
may branch in their free state. 
