PLATE XX. 



Page 

 Gltptocrinus Dyeki (Meek) 271 



Fig. la. A large specimea with arms. (Coll. I. H. Harris.) 



U. Posterior view of a large, flattened specimen of the type of GL Richardsoai 



Wetherby, showing the fixed pinnules. (Coll. W. and Sp.) 

 Ic. The base, showing the angles of the axial canal to be interradial. (Coll. 



Mr. E. H. Vaupel.) 



Gltptocrinus marginatus Billings 275 



2. The type specimen ; postero-lateral view. (Mus. Geol. Snrv., Canada.) 



Glyptoceinus Fornshelli Miller 276 



3. The calyx and part of the stem. (Coll. I. H. Harris.) 



Glyptoceinus decadactylus Hall 270 



4(1. A very large specimen. (After Meek.) 



4/^ Posterior view of calyx. (Coll. I. H. Harris.) 



4c. Ventral aspect of a rather small specimen (f). (Coll. E. 0. Ulrich.) 



4(Z. Ventral aspect of an older specimen (f). (Coll. W. and Sp.) 



4e. Portions of the arms, showing covering-plates (f ). (Same collection.) 



• Glyptoceinus eamulosus Billings 273 



5a. One of the type specimens ; lateral view. (Mus. Geol. Surv., Canada.) 

 5b. Another type specimen, showing the ramifications of the arms. (Same 

 collection.) 



Glyptoceinus ornatus Billings 274 



Qa. The type specimen ; anterior view. (Mus. Geol. Surv., Canada.) 

 (Sb. Posterior view of same sx)ecimen. 



