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MANUAL OF ZOOLOGY 



The structure of a corallite is conveniently illustrated by 

 that of the solitary genus Flabellum (Fig. 58, A, ). It 



sep- 



FIG. 58. A, B, two views of Flabellum curvatum. C, semi-diagrammatic view 

 of a simple coral ; D, portion of a corallite ; E, F, diagram of a simple coral in 

 longitudinal and transverse section ; ectoderm dotted, endoderm striated, 

 skeleton black, b.pl. basal plate; col. columella ; c.th. epitheca ; gul. gullet; 

 tties., mes. /, vies. 2, mesenteries; t/ies. f. mesenteric filaments; scf>. septa; 

 /. tentacle ; th. theca. (A and B after Moseley ; C andD after Gilbert Bourne.) 



