PLATE VII. 



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



From, the Lower Gliallc. 

 Fig. 



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

 h. 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.) 

 h. A supero-marginal plate ; magnified. 



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



size. (Coll. Brit. Mus.) 

 h. A supero-marginal plate ; magnified. 



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



From the Lotoer Chalk. 



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

 h. Lateral view of the margin ; natural size. 

 c. A supero-marginal plate ; magnified. 



