"Encope emarginata. Encope is a genus of irregular clypeastroid sea-urchins, of the family Mellitidae." -Whitney, 1911

Encope

"Encope emarginata. Encope is a genus of irregular clypeastroid sea-urchins, of the family Mellitidae."…

"Metacrinus interruptus." -Parker, 1900

Metacrinus Interruptus

"Metacrinus interruptus." -Parker, 1900