PLATE XLVI. 



Page 

 (?) Periechocrinus White: (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.) 



(?) Periechocrinus tenuidiscus (Hall) 531 



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



Agaricocrinus Sampsoni S. A. Miller 505 



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



LoBOCRixus -EQuiBRACHiATus MoChesney 440 



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

 66. Ventral aspect of the same specimen. 



Batocrinus rotadentatus Rowley and Hare 374 



7. The type specimen, showing the dorsal cup. (Coll. R. R. Rowley.) 



Batocrinus Calvini Rowley 373 



8a. Side view of the type specimen. (Coll. R. R. Rowley.) 



8?). Another view of the calyx, showing the anal interradius to the left. 



DizYGOCRiNus EucoNus, var. ABScissus (Rowley and Hare) . . . 431 



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



DiZYGOCRINUS MONTGOMERYENSIS WorthCD 428 



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



Rowley.) 



AcTixocRiNus (?) CHOUTEAUENSis S. A. Miller 570 



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

 lib. Ventral aspect of the same specimen. 



