PLATE XIII. 



Page 

 Bhodoceinus Whitei Hall 223 



Fig. la. Dorsal aspect of calyx. (Coll. W. and Sp.) 

 lb. Ventral aspect of same specimen. 

 lc. Posterior side of same. 



Bhodocrinus tbuncatus W. and Sp 231 



2a. The type specimen, lateral view. (Coll. W. and Sp.) 



2b. Posterior view of same. 



2c. Dorsal aspect of same. 



2d. Ventral aspect of another specimen. (Same collection.) 



2e. Side view of same specimen. 



2/. Side view of a very large specimen. (Same collection.) 



Bhodoceinus tubeeculatus W. and Sp 232 



3. Side view of the type. (Coll. W. and Sp.) 



4. Side view of a larger and more nodose specimen. (Same collection.) 



Bhodoceinus Wachsmuthi Hall 222 



5a. A large specimen with arms. (Coll. W. and Sp.) 



5b. Posterior view of calyx. (Same collection.) 



5c. Side view of same specimen. 



5d. Dorsal aspect of another specimen. (Same collection.) 



Ehodoceinus coxanus Worthen 222 



6. The type specimen ; lateral view. (Coll. L. A. Cox.) 



7. Another specimen of this species, described as Bhodocrinus polydactylus. 



(Same collection.) 



Ehodoceinus nodulosus Hall 225 



8. The type specimen. (After Hall.) 



Thysanoceinus Halli Lyon 196 



9a. Dorsal aspect of calyx. (Coll. Borden Institute, New Providence, Indiana.) 

 9b. An abnormal specimen. (Same collection.) 



Lampteeoceinus Tennesseensis Eoemer 208 



10a. Posterior view of the calyx. (Coll. W. and Sp.) 

 10b. Ventral aspect of same. 



10c. Anterior view of another specimen. (Same collection.) 

 lOd. Portion of the stem. 



Thylacoceinus Claekei W. and Sp 248 



11a. The type specimen, lateral view. (State Cabinet Nat. Hist. 1ST. Y.) 

 lib. Infrabasal disk, showing the stellate column facet. 



