PLATE XVII. 



PAG 8 



Fig. 1. Sphenopoterium compressum, M. and VV 234 



1 '7. .Side view. 



1 b. Magnified surface markings. 



1 c. Profile view in outline. 



Fig. 2. Sphenopoterium obtusum, M. and W '. 233 



2 a. Upper side of a large specimen, with nine cells. 



'_' b. Profile view of another specimen, with four cells. 



2 c. Upper side of same. 



2 d. Magnified surface markings of same. 



2 c. Under side of specimen, with four cells. 



Fig. 3. Onychocrinus Norwoodi, M. and W 245 



Anterior view, showing the body, with portions of the rays and column. 



Fig. 4. Cyathocrinus angulatus, M. and W 234 



Side view of body (distorted) and portions of arms. 



Fig. 5. Cyathocrinus Saffordi, M. and W 236 



5 a. Anal side of body, without the arms. • 

 ."> b. Under side. 



Fig. 6. Scaphiocrinus DECADACTYLUS, M. and W 238 



Side view of body and two of the arms, with fragments of other arms. 



Fig. 7. Onychocrinus Monroensis, M. and W 244 



Side view, showing body, arms and column, with the small finger-like 

 series of anal pieces in their natural position between the two poste- 

 rior rays. 



Fig. 8. Oligoporus Dan^e, M. and W 249 



Side view of a flattened specimen, showing two of the ambulacra, and 

 the large inter-ambulacral plates filling the space between. 



