NO. 5 TERTIARY ECHINOIDS FROM FLORIDA — KIER 6l 



Plate 5 



Page 

 Encope michelini imperforata Kier, new subspecies 33 



1, Adapical view of holotype, U.S.N. M. 648167, from the Caloosa- 

 hatchee formation, loc. 2, X 1. 



Clypeaster prostratus (Ravenel) 20 



2, Interior view of basicoronal plates (U.S.N.M. 648173) from 

 the Recent specimen from the Gulf of Mexico, lat. 29° 10'N., long. 

 85° 31' W., Albatross station 2375, X 4. 



3, Lantern from hexamerous variant from same locality, X 2. 



Plate 6 



Clypeaster prostratus (Ravenel) 20 



1, 2, Adapical, adoral view of hexamerous variant (U.S.N.M. 



648174) from the Recent from the Gulf of Mexico, lat. 29° 10'N., 



long. 85° 31'W., Albatross station 2375, X 1. 

 Encope michelini imperforata Kier, new subspecies 33 



3, 4, Adoral and left side of U.S.N.M. 648168 from the Caloosa- 

 hatchee formation, loc. 6, X 1. 



Plate 7 



Clypeaster prostratus (Ravenel) 20 



1, 2, 3, Adapical, right side, adoral views of U.S.N.M. 648175 from 

 the Recent specimen from the Gulf of Mexico, lat. 29" 10'N., long. 

 85° 31'W., Albatross station 2375, X 1. 



4, Apical system of same specimen, X 10. 



Plate 8 



Clypeaster subdepressus ( Gray) 25 



Adapical view of U.S.N.M. 648162 from the Caloosahatchee forma- 

 tion, loc. 3, slightly reduced. Adoral view on pi. 14. 



Plate 9 



Clypeaster subdepressus (Gray) 25 



Adoral view of same specimen in pi. 8. 



Plate 10 



Clypeaster rosaceus dalli (Twitchell) 26 



Adapical view of U.S.N.M. 648163 from post-Caloosahatchee but 

 pre-Fort Thompson beds at loc. 1, XL 



Plate 11 



Clypeaster crassus Kier, new species 30 



1, 2, Adapical, right side of holotype, U.S.N.M. 648142, from the 



Tamiami formation, loc. 9, X 1. 

 3, Adoral view of U.S.N.M. 648143 from the Tamiami formation, 



loc. 9, X i 



