Proceedings Nat. Mu8., 1879. C. A. White. 



Plate 1. 



^-, 

 ^\^- 



1, 2, and 3. — Acf.rvularia adjunctiva. 



■1 and .5.— Lkcythiocrixus ollicul^fokmis. 

 fl and 7.— Erisockinus planus. 



S.— POTERIOCRINUS HEMISPHF.RICU8. 



9 and :0. — Cyathocrinus stillativus. 

 11 and 12 — Rhodocrinus vesperalis. 

 13, 14, and 15.— Arch^Ocidaris bininnii. 



