PLATE VI. 



Rhodocrinus pteiformis (page 61). 



Figure la. A specimen witli part of the coluran attached. 

 " 16, Ic. Crushed specimens. 

 " Id. The radix of this species. 



Rhodocrinus miceobasalis (page 63). 



Figure 2. An imperfect specimen of this species. 



Rhodocrinus gigas. 



Figure 3 is a fragment of the column of a large Rhodocrinus which occurs in the 

 upper part of the Trenton limestone, at the City of Ottawa. I have 

 not seen the cup, but as the columns are easily recognizable, I propose 

 the above name for them. 



