U. S. NATIONAL MUSEUM 



niJLL' T!H •<; PL. ■,? 



1. PECTINASTER AGASSIZI EVOPLUS. 2. GEPHYHEASTER SWIFTI. 3. MeOIASTER TENELLUS. 4. PS£ I 



PUSILLUS. 5. PS. PARELII. 6. PS. PiHtL;l AL4SCf NSl'. 7. ?•; Ol'^';r>si)<i. 



