Try looking in:
1995 Hendler / Miller / Pawson / Kier
Sea Stars, Sea Urchins, and Allies: Echinoderms of Florida and the
Caribbean
Smithsonian Institute Press, 392pp. ISBN: 1-56098-450-3
(available through) Smithsonian Institute Press
Marketing Department
470 L'Enfant Plaza
Suite 7100
Washington, D.C. 20560
If you have trouble obtaining a copy and still can't identify them please
let me know and I'll dig through the book to see if I can help if I can find
the time, but echinoderms are a bit out of my field of study.
Cheers,
Leslie Allen Crnkovic
HARF