PLEISTOCENE ECHINODERMATA. 227 



Collections. — Johns Hopkins University ( T 2, T 4); American Museum of Natural History; 

 U. S. National Museum; Wagner Free Institute of Science; Academy of Natural Sciences of 

 Philadelphia. 



Order ATELOSTOMATA. 



Suborder STEENATA. 



Family SPATANGID.E. 



Genus SCHIZASTER Agassiz. 



Schizastek atropos (Lamarck). 



Schizaster atropos Ravenel, 1848, Echinidse, recent and fossil, South Carolina, p. 4. 

 Schizas'er atropos Holmes, 1858, Post-Pliocene fossils South Carolina, pp. 5, 6, PI. II, rig. 3. 

 Mara lachesis Desor, 1858, Synopsis £chinides fossiles, p. 394. 

 Schizaster atropos A. Agassiz, 1874, Revision of the Echini, p. 751. 



Description. — No material has been found that can be referred to this species. 

 Locality. — Abbapoola Creek, Johns Island, S. C. (Holmes). 

 Geologic horizon . — Pleistocene. 

 Collection. — Unknown. 



