PLATE IV. 



Dendrocrinus conjugans (page 4X)o 



Figure la. Anterior side. 



" 16. Column, a little enlarged. 



" 2a. Side view of a specimen. 



" 26. Column of same, enlarged. 



Lecanocrinus LiEvis (page 47). 



Figure 3a. A slightly crushed specimen. 



Lecanocrinus elegans (page 47). 



Figure 4a. A specimen shewing one of the hexagonal basal plates. 

 " Ah. Several joints of the column, a little enlarged. 



Heterocrinus Canadensis (page 48). 



Figure 5a. A specimen with part of the column attached. 



" 56. Portion of the column, enlarged. 



" 5c. Anterior side of a different specimen. 



" 5rf. A specimen which has the, pinnulfe preserved. 



Heterocrinus tenuis (page 50). 



Figure Qa. A specimen with part of the column. 

 " 66. A few joints of the column, enlarged. 

 [ See also Plate X.] 



Heterocrinus in^qualis (page 51). 



Figure la. A nearly perfect specimen, but so deeply embedded in stone that only 

 one side can be seen. 



Heterocrinus articulosis (page 51). 



Figure 8. One of the rays of this species. 



