﻿Explanation of Plate XLII 



(Photographs retouched by Miss Frances Wieser. The illustrations on 

 this plate are one-third smaller than the specimens. From the Helderbergian 

 of Indian Territory.) 



Figs. 1-4. Camarocrinus ulrichi Schuchert p. 271 



(See also Plates XL, XLI, and XLIII.) 

 Fig. 1. A large and characteristic specimen of this species; holotype, 



35,085. 

 Fig. 2. Another large and old specimen in which the lower half of 

 the bulb is covered with a secondary deposit of calcareous 

 matter through which pass large and modified openings. 

 Fig. 3. A small specimen illustrated to show the four small lobations 

 or camarae situated on the right and left of the figure ; this 

 figure also shows how the root branches terminate in the 

 camarae walls. 35,085. 

 Fig. 4. A siliceous etched base of a medium-sized bulb, showing the 

 medio-basal chamber surrounded by 5 camarse, each of which 

 has a large opening through the test. 35,084. 



