DESCRIPTION OF 19 



PLATE XVIII. 



Page 



Fig. 1. CYATHOCRINUS BULLATUS. 624 



1 a. View of the base and a part of two arms. [The subradial plates are 

 not represented as sufficiently prominent or globulose.] 



Fig. 1. CYATHOCRINUS TUMIDUS. 624 



1 b. Anal side of specimen. 



1 c. Basal view of same. 



Fig. 2 & 3. CYATHOCRINUS MAGISTER. 628 



2 a. The basal plates and fragments of column attached. 



2 6. Base of the same specimen. 



3 a. Fragment of separate column of apparently the same species. 



3 b. Transverse section of the column, showing a large obtusely pentagonal 

 foramen. 



Fig. 4. PLATYCRINUS SAR^E. 673 



4. View of a specimen having the body, arms and tentacula nearly entire, 



with a small portion of the column. 



. 

 Fig. 5 & 6. PLATYCRINUS SAFFORDI. 634 



5. Lateral view, showing the base and three radial plates. 



6. Basal view of an imperfect specimen. 



TV '. 



Fig. 7 & 8. CYATHOCRINUS SPURIUS. 625 



7. View of anal side of specimen. 



8. Basal view of the same. 



Fig. 9. CYATHOCRINUS PROTUBERANS. 626 



9. View of the left antero-lateral side of specimen. 



Fig. 10. CYATHOCRINUS INTERMEDIUS. 627 



10. The anal side of specimen, which is much crushed and the plates se- 

 parated. 



