PLATE I. 



ECHINODERMS OF THE CRAG. 



Fig. 



1. Temnechinus excavatus, jo. 6. 



\a. Upper surface. 



lb. Side view. 



Ic. Ambiilacral and interambulacral plates and avenues. 



Id. A spine. 



2. Temnechinus melocactus, ji^. 7. 



2fl. Upper surface. 

 26. Side view. 



3. Temnechinus globosus,jo. 8. 



3«. Upper sixrface. 



3/j. Side view. 



Sc. Ambulacral and interambulacral plates. 



4. Echinus Lamarckii, jo. 2. 



4«. Side view. 



■ib. Ambulacral and mterambulacral plates, and avenues. 



4c. A spine. 



5. Echinus Lyellii, JO. 4. 



5a. Fragment showing ambulacral and interambulacral plates. 

 bb. A portion magnified. 

 5c. A spine. 



6. Echinus Charlesworthii, jo. 5. 



6a. Upper surface. 

 1^ Gb. Side view. 



6c. Ambulacral and interambulacral plates. 



7. Echinus Henslovii, JO. 5. 



7a. Upper surface. 



7b. Side view. 



7 c. An interambulacral and two ambulacral plates. 



