PLATE XXVIII. 



Ophiotitanos tenuis, n. sp. (Page 104.) 



From the Lower Chall". 

 Fig. 



1. Abactinal aspect of type specimen; natural size. (Coll. Brit. Mus., E. 5056.) 

 a. Abactinal aspect of a segment of disc and two arms ; magnified 8 diameters 



(slightly restored). 



2. Actinal aspect of another example; natural size. (Coll. Brit. Mus., E. 5057.) 

 a. Actinal aspect of a segment of disc and two arms ; magnified 8 diameters 



(slightly restored). 



OPHion'MNOS Lit;vi.<, n. sp. (Page 105.) 



From flic Loivcr Ohallc. 



o. Abactinal aspect ; natural size. (Coll. Brit. Mus., E. 5053.) 

 it. Aljactinal aspect of a segment of disc and two arms; magnified 8 diameters 

 (slightly restored). 



4. Abactinal aspect of another small example. (Coll. Brit. Mus., E. 5058.) 



It. x\bactinal aspect of a segment of disc and one arm ; magnified 10 diameters 

 (slightly restored). 



OriiioTn'ANOS magnus, n. sp. (Page lOG.) 

 From the Lower Clutlk. 



5. Actinal aspect of type specimen ; natural size. (Coll. Brit. Mus., E. 5060.) 

 ti. Actinal aspect of portion of arm; magnified 4 diameters (slightly restored). 



Amphiura CEETACbiA, n. sp. (Page 107.) 

 From the Lower Chalk. 



6. Actinal aspect of type specimen; natural size. (Coll. Brit. Mus., E. 5059.) 



(/. Actinal aspect of a segment of disc and two arms; magnified 10 diameters 

 (slightly restored). 



