﻿PLATE VII. 



(?) Nymphaster Coombii, Forbes, sp. (P. 15.) 



From, the Lower Chalk. 

 Fig. 



1 a. Actinal aspect; natural size. (Coll. Brit. Mus.) 



b. Lateral view of the margin ; natural size. 



c. Adambulacral plates ; magnified. 



d. An infero-marginal plate ; magnified. 



e. Actinal intermediate plates ; magnified. 



2 a. Abactinal aspect of an example from the Grey Chalk at Folkestone ; natural 



size. (Coll. Brit. Mus.) 

 b. A supero-marginal plate ; magnified. 



3 a. Abactinal aspect of an example from the Lower Chalk of Glynde ; natural 



size. (Coll. Brit. Mus.) 

 b. A supero-marginal plate ; magnified. 



Calliderma mosaicum, Forbes, sp. (P. 9.) 

 From the Lower Chalk. 



4 a. Abactinal aspect ; natural size. (Coll. Brit. Mus.) 



b. Lateral view of the margin ; natural size. 



c. A supero-marginal plate ; magnified. 



