PLATE XXI. 



Page 



Peeiglyptocinus Billingsi W. and Sp 277 



Pig. la. Posterior view of a specimen with arms and stem. (Coll. John Stewart, 

 now in the Canada Survey Museum at Ottawa.) 

 lb. Another specimen in the same collection, showing the left postero-lateral 

 ray and anal interradius. 



Peeiglyptoceinus peiscus (Billings) 278 



2. The type specimen. (Museum Geol. Surv., Canada.) 



Glyptocbinus Dyeei (?) . . 271 



3a-c. Young specimens, probably of G. Dyeri (f). 



3d. Type of Miller's Pycnocrinus Shafferi (f). (Coll. S. A. Miller.) .... 272 

 3e. Type of Miller's Pycnocrinus Shafferi, var. germanus (f). (Same collection.) 

 3/. A somewhat larger specimen (f). (Coll. W. and Sp.) 



Glyptocbinus decadactylus Hall 270 



4a. Inner floor of the dorsal cup (f). (Coll. E. 0. Ulrich.) 

 45. Interior view of the basal cup (f). The angles of the axial canal directed 

 interradially. (Coll. W. and Sp.) 



Glyptocbinus Poenshelli Miller 276 



5. Interior view of the basal cup (| 4 ). The angles of the axial canal directed 



radially. (Coll. I. H. Harris.) 



Glyptocbinus Dyeei Meek , 271 



6. Calyx, showing the posterior side of a large, highly ornamented specimen. 



(Coll. E. 0. Ulrich.) 



Compsoceinus miamiensis S. A. Miller 518 



7«. The type specimen; posterior side. (Coll. I. H. Harris.) 

 lb. Anterior view of another specimen. (Coll. W. and Sp.) 



Compsoceinus Habbisi S. A. Miller 517 



8a. One of the type specimens; lateral view (f 5 ). (Coll. I. H. Harris.) 

 Sb. Posterior view of another type specimen (f). (Same collection.) 



