PLATE XLVII. 



Page 



Megistocrinus Evansi 0. and Sh 533 



. la. Lateral view of a large specimen. 

 lb. Ventral aspect of the same. 



2a. Basals and radials of a large specimen with corrugated surface. 

 2b. Inner floor of the ancbylosed basals. 



3. A medium-sized specimen with the anal opening low down. 

 4a. Upper part of the stem. 

 45. Its lower part. 

 5a. A rather small specimen of the form described by Hall as Actino crimes 



brevicomis ; anterior side. 

 5b. Posterior view of the same specimen. 

 5c. Ventral aspect of same. 



Megistocrinus nobilis W and Sp 537 



6. Posterior side of a large specimen with arms. 



7. Ventral aspect of another specimen with arms, showing side- and covering- 



plates. 

 8a. Showing the covering-plates and side-pieces as they enter the ventral disk 



(enlarged). 

 85. A portion of the same specimen, showing the covering- and side-pieces in 



profile (still more enlarged). 



(All the specimens are in the collection of Wachsmuth and Springer.) 



