



Figure 11. — Ctenodiscus crispatus. A, aboral; B, oral. 1 

 cm. indicated. 



Tethyaster vestitus (Say) 



Synonymy : 



Asterias vestita Say, 1825. 



Astropecten vestihis: Liitken, 1859. 



Sideriaster ( ?) vestitiis: Verrill, 1914. 

 Description : 



Form broadly stellate, with very large disc. 



Arms five. Aboral surface closely covered with 



Figure 12. — Tethyaster vestitus. A, atK>ral ; B, oral. 10 cm. 

 indicated. 



uniform stellate paxillae. Upper marginals 

 granulated, small, entirely lateral. Aboral in- 

 terradial areas lai-ge, with numerous granu- 

 lated plates. Madreporite very large, round, 

 flat. Papular pores over entire aboral surface, 

 about six around each plate. Adambulacrals 

 with large median compressed spine, with two 

 to three erect flattened spines on each side of 

 furrow series; stout spines on actinal side, 



142 



U.S. FISH AND WILDLIFE SERVICE 



