Roy. Sac. Proc., vol. 74, Plate 1. 



FIG. 1. Cast of Palaodiseus ferox in the Oxford Museum 



JOE 



1 scjo. 



FIG. 2. U 



Upper view of Agelacrinus cincinnatiensis in the Oxford Museum 

 /, II, III, ir, V, are Ambulacra ; An = Anus ; F.p., flooring plates 

 s.c.p., side covering plates ; m.c.p., mouth corner plate. 



