PLATE XLVT. 



Page 



(?) Pbeiechoceinus Whitei (Hall) 530 



Fig. 1. A very large specimen from the Upper Burlington limestone. (Coll. W. 

 and Sp.) 



2. A smaller specimen from the same bed. (Same collection.) 



3. Side view of the calyx. (Same horizon, and same collection.) 



(?) Peeiechoceinus tenuidiscus (Hall) 531 



4. Lateral view of the dorsal cup. (Same collection.) 



Agabicocbinus Sampsoni S. A. Miller 505 



5. The type specimen. (Coll. F. A. Sampson.) 



Lobocbinus ^quibeachiatus McChesney 440 



6a. Specimen with only eighteen arms. (Coll. W. and Sp.) 

 6/;. Ventral aspect of the same specimen. 



Batoceixus eotadentatus Eowley and Hare 374 



7. The type specimen, showing the dorsal cup. (Coll. B. B. Eowley.) 



Batoceinus Calvini Eowley 373 



8a. Side view of the type specimen. (Coll. E. E. Eowley.) 



85.' Another view of the calyx, showing the anal interradius to the left. 



Dizygoceinus euconus, var. abscissus (Eowley and Hare) . . . 431 



9. Side view of the calyx. (Coll. W. and Sp.) 



Dizygoceinus montgomeeyensis Worthen 428 



10. Type of the synonym " Batocrinus Gurleyi " E. and H. (Coll. E. E. 



Eowley.) 



Actinocbinus (?) chouteauensis S. A. Miller 570 



11a. Posterior view of the type specimen. (Coll. F. A. Sampson.) 

 115. Ventral aspect of the same specimen. 



