Memoirs of the National Academy of Sciences, Τόμος 8

Actinian Actiniaria adult polyps Agaricia Anthozoa apex appearance arranged asexual Asexual reproduction axial basal become bilateral pairs calice calicoblast layer canals chambers ciliated Cladocora colony color columella column wall columnar complete mesenteries coral polyps corallite corallum developed discal disk distinct dorsal endoderm entocœlic epithelium exocœlic expanded extend extruded Favia fission fissiparous full expansion gemmation gland cells gonidial granular granules grooves hexameral histological incomplete interseptal Isophyllia Lacaze-Duthiers larva larvæ later loculi Madrepora Madreporaria Manicina mesenterial filaments mesogloa musculature narrow nematocysts occur oral aperture Orbicella outer oval pairs of directives pairs of mesenteries peripheral peristome perithecal Porites present primary protocnemes radial represented retracted polyps retractor retractor muscle ridges septa septal invaginations Siderastræa six pairs skeletal skeleton skeletotrophic tissues species stage stomodæal ectoderm stomodæal region stomodæal wall stomodæum supporting cells surface synapticula tentacles tentacular termination thickened transverse sections twelve upper usually vacuolated ventral vertical young polyps zooxanthellæ