---------- giganteum, [474].
---------- gregarium, [475].
---------- laterale, [475].
---------- striatum, [475].
Osmeroides Lewesiensis, [627].
---------- Mantelli, [627].
Osmington, Dorset, [408], [412].
Ossicles of encrinites, [284].
-------- starfishes, [303].
Ossiferous caverns, [808].