PLATE I. 



ECHINODERMS OF THE CRAG. 



Fig. 



1. Temnechinus excavatus, p. 6. 



\a. Upper surface. 



lb. Side view. 



1c. Ambulacral and interambulacral plates and avenues. 



Id. A spine. 



2. Temnechinus melocactus, /;. 7. 



2a. Upper surface. 

 2b. Side view. 



3. Temnechinus globosus,j». 8. 



3a. Upper surface. 



3b. Side view. 



3c. Ambulacral and interambulacral plates. 



4. Echinus Lamarckii, p. 2. 



4a. Side view. 



4<b. Ambulacral and interambulacral plates, and avenues. 



4c. A spine. 



5. Echinus Lyellii, p. 4. 



5a. Fragment showing ambulacral and interambulacral plates. 

 53. A portion magnified. 

 5c. A spine. 



6. Echinus Charlesworthii, p. 5. 



6a. Upper surface. 



6b. Side view. 



6c. Ambulacral and interambulacral plates. 



7. Echinus Henslovii, p. 5. 



7a. Upper surface. 



lb. Side view. 



7c. An interambulacral and two ambulacral plates. 



