PLATE LXXIII. 



Page 

 EUCLADOOEINUS MILLEBRACHIATUS W. and Sp 720 



Fig. 1. A large specimen ; the tubular appendages hanging over the calyx. 



EucLADOCRiNus MiLLEBEACHiATUS, var. iMMATUEt's W. and Sp. . . 722 



2. Dorsal view of a small specimen ; the tubular appendages directed 



horizontally. 



3. Ventral aspect of a larger specimen, showing the bases of the arms. 



EucLADOCEiNus PLEUKOviMiNEUs (White) 724 



4. A large specimen, showing the dorsal side of tlie calyx. 



EucLADOCRiNus PR^NUNTius W. and Sp 723 



5. One of the type specimens, showing calyx and portions of the arms. 



Platycrinus huntsvill.^ (Troost) W. and Sp 678 



6. A large specimen with inflated arms ; the plates of the calyx not ornamented. 

 7a. Another mature specimen with ornamented calyx plates, the arms gradually 



tapering. 



111. A portion of one ray enlarged, showing the spinous processes at the sides of 

 the arm plates, the waving suture lines between the lower brachials, and 

 the arrangement of the pinnules (f). 



8b. An immature specimen ; the arms uniserial to nearly one half of their 

 length {{i). 



9. A more mature specimen (\i). 



10. A very young specimen, the arms composed of comparatively elongate plates, 



and uniserial almost to their tips (f ). 



11. The base of a highly ornamented specimen. 



12. The base of a smooth specimen. 



(All the specimens in the collection of Wachsmuth and Springer.) 



