344 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
2. Asterina folium (Ltk.). Common. Coney Island, Castle 
Harbor, etc. 
3. TAnckia guildingii (Gray). Not common. Coney Island. 
4. Asterias tenuispina Lamk. Common. Harrington Sound. 
Flatts. Coney Island. 
Opiiiuroidea. 
5. Ophiura appressa Say. Not uncommon. North shore. 
6. Ophiactis mutteri Ltk. Rare. North shore. Coney 
Island. 
7. Ophionereis reticulata (Say). Abundant everywhere. 
8. Ophiostigma isacantha (Say). Rare. North shore. 
9. Ophiocoma echinata (Lamk.). Common. North shore. 
Harrington Sound. 
10. Opliiocoma pumila Ltk. Not common. Castle Harbor. 
Bailey’s Bay. 
11. Ophiomyxa flaccula (Say). Not uncommon. Coney 
Island. 
Echwoidea. 
12. Oidaris tribuloides (Lamk.). Not found along shore. Com¬ 
mon at North Rock. 
13. Diadema setosum Gray. Common about the reefs. 
14. Echinometra subangularis (Leske). Common. Every¬ 
where. 
15. Toxopneustes variegatus (Lamk.). Abundant everywhere. 
16. Hipponoe esculenta (Leske). Not common. Reefs along 
north shore. 
17. Mettita sexforis A. Ag. Not common. Flatts. 
18. Ecliinoneus semilunaris (Gmel.). Apparently quite rare. 
Has not been collected recently. Locality unknown. 
19. Bris sus unicolor (Kl.). Apparently rare. Not recently 
collected. Locality unknown. 
Holothukioidea. 
20. Cucumaria punctata Ludw. Not abundant. North shore. 
21. Holothuria captiva Ludw. Quite common. North shore. 
22. Holothuria surinamensis Ludw. Abundant. North shore. 
