PLATE XXVII. 



Page 

 Batocrinus grandis (Lyon) 331 



Pig. la. Lyon's type specimen, — a fine example with arms 



lb. Portion of an arm from near the top, enlarged. 



2a. Lateral view of the calyx. 



2b. Posterior view of a specimen with anal tube. 



Batocrinus icosidactylus Casseday 368 



3a. Lateral view of a large specimen. 

 3b. Dorsal aspect of another specimen. 

 3c. Portion of the anal tube. 



Batocrinus irregularis Casseday 359 



4a. Posterior view of the calyx, somewhat enlarged. 

 Ab. Lateral view of the same specimen. 

 4c. Portion of the anal tube. 



Batocrinus turbinatus (Hall) 375 



5a. Posterior view of the calyx. 



5b. Lateral view of another specimen. 



5c. Antero-lateral view of a specimen with arms. 



Batocrinus turbinatus, var. elegans (Hall) 376 



6a. Lateral view of the calyx. 

 65. Posterior view of the same. 



Batocrinus cantonensis Miller and Gurley 383 



la. Posterior view of a specimen, showing anal tube. 

 lb. The same view of a specimen with arms. 



Batocrinus clypeatus (Hall) 380 



8a. Lateral view of the calyx. 



8b. The same of another specimen (variety B. papillaris). 



8c. Anterior view of a more wheel-shaped specimen. 



M. Posterior view of a young specimen (typical form). 



8e. Lateral view of a small specimen with arms (variety B. inomatus.) 



(All the specimens are in the collection of Wachsmuth and Springer, except 

 that of Pig. la, which is in the Lyon collection.) 



