Sect. FLUCTUACSTIA Lam. 
Genas Pennatula? Linn. 
Pennotula Diluvii Mich. 
Ast. 
CLASSIS III. 
RADIARIA Auct. 
Ordo EGHINIDA Ag. 
Sect. SPATANGI Auct. 
Genus Schyzaster Ag. 
Scliyzaster Canallferus Ag. 
( Spatangus Lam. ) 
Ast. Taur. (v. in Oc. Am.et Med ) 
— Agassizii E. Sism. 
Taur. 
— Genei E. Sism. 
Taur. 
— Borsonii E. Sism. 
Ast. 
— Grateloupii E. Sism. 
Taur. 
— Intei medius E. Sism. 
Taur. 
— Ovatus E. Sism. 
Ast. 
i3 
Genus Spatangus Ag. 
Spatangus Purpureus Lam. 
Taur. Ast. ( v. in Med. et mar. 
Amer.) 
— Lateralis Ag. 
Taur. 
— Chitonosus E. Sism. 
Taur. 
Sect. CLYPEASTRI Auct. 
Genus Echinolampas 
Gray. 
Echinolampas Affinis Ag. 
Taur. 
— Similis Ag. 
Taur. 
— Studeri Ag. 
Ast. 
Genus Fibularia Lam. 
Fibularia Studeri E. Sism. 
( Anaster E. Sism. ) 
Taur. 
Genus Clypeaster Lam. 
Clypeaster Rosaceus Lam. 
Ast. Taur. ( v. in Oc. Amer. ) 
— Altus Lam. 
Taur. 
— Crassicostatus Ag. 
Taur. 
— Ambigenus De-Blainv. 
Taur. 
— Beaumontii E. Sism. 
Taur. 
