CRINOIDS AND BLASTOIDS. 179 



small spine; the four regular proximals much larger than the 

 two at the anal side, which are separated from the former at 

 each side by a radial-dome-plate. 



Column round, slender; composed near the calyx of alternat- 

 ing joints, the larger ones with rounded edges. 



Geological position, etc.: Same as preceding species. 



Our own collection. 



