Explanation of Plate XXV. 



Page 

 Fig , 1 . Platycrinus saffordi 202 



Side view of dorsal cup. ( Key es collection.) 



Carboniferous, Keokuk limestone. 



Fig. 2. Platycrinus americanus 199 



2a. Dorsal aspect of calyx (Keyes collection ) 

 2b. Side view of another specimen. 



Carboniferous, Lower Burlington limestone. 

 Fig . 3 . Platycrinus halli 201 



Side view of dorsal cup. (Keyes collection.) 



Carboniferous, Upper Barlington limestone. 

 Fig. 4 . Platycrinus discoideus 



Dorsal aspect of a specimen with arms. (Keyes collection.) 



Carboniferous, Lower Burlington limestone . 

 Fig. 5. Platycrinus pUeiformis 198 



Side view of dorsal cup, showing grooves caused by Capulus shells . 

 (Keyes collection.) 



Carboniferous, Lower Burlington limestone. 

 Fig 6. Talarocrinus simplex 205 



Calyx. (After Shumard.) 



Carboniferous, Saint Louis limestone. 

 Fig 7 . Dichocrinus blairi 204 



Specimen with arms and part of stem. (After Miller ) 



Carboniferous, Keokuk limestone. 

 Fig . 8 . Dichocrmus striatus . 203 



Calyx. (Keyes collection .) 



Carboniferous , Lower Burlington limestone . 



Fig 9 . Belemnocrinus sampsoni 2o7 



■ Type speciraea. (After Miller .) 



Carboniferous, Lower Barlington limestone. 

 Fig . 10 . Barycrinus sp . ? 



Specimen with arms. (Keyes collection.) 



Carboniferous, Barlington limestone. 

 Fig. 11. Cyathocrinusiowensis . 207 



View of calyx. (Keyes collection.) 



Carboniferous, Barlington limestone. 

 Fig . 12 . Cyathocrinus enormis 208 



A specimen with arms. (Keyes collection.) 



Carboniferous, Lower Barlington limestone. 

 Fig. 13. Lecythiocrinus olliculceformis 208 



View of calyx. (Hare collection.) 



Carboniferous, Upper Coal Measures. 

 Fig. 14. Symbathocrinus dentatus 206 



Posterior side of calyx. (Keyes collection.) 



Carboniferous, Upper Burlington limestone. 

 Fig. 15. Symbathocrinus wortheni 20& 



Specimen with arms. (Keyes collection.) 



Carboniferous, Lower Barlington limestone. 



