EXPLANATION OF PLATE 14 



Figs. 1, 2 Cleistopora typa (Winchell) emend, Easton ; holotype ; x5 p. 59 



1, Longitudinal section ; reticulate structure is in somewhat horizontal rows and the open 

 portions contain thin diaphragms ; corallite walls perforate and not well differentiated ; 

 corallites flat-floored. 



2, Transverse section near surface ; general hexagonal shape of corallite is observable. 



Fig. 3 Cleistopora geomctrica (Milne-Edwards and Haime) ; plesiotype ; x6 p. 57 



Longitudinal section ; well-defined walls and concave corallite floor are noteworthy ; 

 genotype; figured for comparison (after Smyth). 



Figs. 4, 5 Cleistopora ramosa (Rowley) ; plesiotype ; X 5 p. 58 



4, Longitudinal section ; well defined corallite wall on left, poorly defined wall on right ; 

 \ merging of tabulae into reticulate structure is characteristic. 



5, Transverse section midway in corallum ; central reticulate mass is almost surrounded 

 by tabulae ; note granular upper surface of tabulae in lower left center. 



186] 



