PLA TE XL 



' EUCALYPTOCEINUS OBCONICUS, HaLL. 



Page 365. 



Pig. 1. Lateral view of a specimen of this species, showing the structure of the body and first 

 bifurcation of the rays. 



EUCALYPTOCRINUS CEASSVS, HaLL. 

 Page 365. 



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, HaLL. 

 Page 366. 



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 mark- 

 ings 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, HalL. 



Page 364. 



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, HaLL. 

 Page 363. 



Fig. 8. Shows the cavity left in the rock by the solution of the substance of the crinoid. The 

 inside of the cavity is occupied by the cast of the interior of the cup of the specimen. 



Figs. 9, 10. Basal and lateral views of a guttapercha cast made in the natural mould left by the 

 removal of the substance of the crinoid. 



Cyathocrinus waurojma, Hall. 



Page. 367. 

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



Cyathocrinus qora, Hall. 



Page 366. 



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 specimens observed are very decidedly constricted 

 above the base.) 



