EXPLANATIONS OF PLATE 11 (2). 



EucALYPTOCRiNUS oBCONicus. page 323 (19). 



Fig. 1. Lateral view of a specimen of this species, showing the structure of the body 

 and first bifurcation of the rays. 



EUCALYPTOCRINUS CRASSUS. page 323 (19). 



Fig. 2. Lateral view of a well preserved cast of this species, which shows the structure 

 of the body in a very satisfactory manner. 

 " 3. Basal view of the same specimen as fig. 2. 



EUCALYPTOCRINUS ORNATUS. page 329 (25). 



Fig. 4. Basal view of the calyx of a specimen of this species. The figure is from a 

 gutta-percha impression taken in the natural mould of the exterior, and 

 shows the surface markings of the plates. 

 " 5. View of an internal cast of this species, of large size, which preserves the 

 impressions of the lines of growth of the plates. 



EUCALYPTOCRINUS CORNUTUS, Var. EXCAVATUS. pa. 322 (18). 



Fig. 6. Basal view of an internal cast of this species, showing the deeply excavated base. 

 '• 7. Lateral view of the same specimen as fig. 6. 



EUCALYPTOCRINUS CORNUTUS. page 322 (18). 



Fig. 8. Shows the cavity left in the rock by the solution of the substance of the cri-. 

 noid. The inside of the cavity is occupied by the cast of the interior of the 

 cup of the specimen. 

 " 9, 10. Basal and lateral views of a gutta-percha cast made in the natural mould 

 left by the removal of the substance of the crinoid. 



Cyathocrinus waukoma. page 324 (20). 



Figs. 11, 12. Lateral and basal views of an internal cast of this species. 



Cyathocrinus cora. page 324 (20). 



Fig. 13. View of the anal side of a specimen of this species, showing the position of the 

 anal plate, 

 " 14. Lateral view of a larger individual of the species, showing more distinctly the 

 radiating lines of the plates. 

 (Some larger specim.ens observed are very decidedly constricted above the base.) 



Ichthyocrinus subangularis. page 325 (21). 



Fig. 15. Lateral view of a specimen from Bridgeport, 111., preserving the substance of 

 the plates. 

 " 16. View of a specimen from Waldron, Ind. The specimen from which the species 

 was originally described. 



Caryocrinus ORNATUS. page 326. 



Fig. 17. Lateral view of an internal cast of a specimen of this species, possessing the 

 usual characters of the species as they occur at these localities. 



Fig. 18. The calyx of a Crinoidean ? of a new and peculiar type, for which I suggest 

 tlie name Cryi>todiscus. 



