FIGURE 9 in Morphological revision of the genus Aiptasia and the family Aiptasiidae (Cnidaria, Actiniaria, Metridioidea)

FIGURE 9. Internal anatomy of Exaiptasia pallida comb. nov. A) Cross section of the column at the level of the actinopharynx showing the cycles of mesenteries (indicated by roman numerals between pairs). B) Detail of fourth cycle of mesenteries (arrows). C) Cross section through a tentacle showing the ectodermal longitudinal musculature; notice zooxanthellae in gastrodermis. D) Cross section through distal column showing strong ectodermal longitudinal musculature. E) Detail of weak parietobasilar muscles. F) Detail of a longitudinal section of the proximal end showing the basilar muscles (arrows). G) Longitudinal section of the distal column showing reticulate mesogleal marginal sphincter muscle. Abbreviations: ep, epidermis; ga, gastrodermis; me, mesoglea; s, siphonoglyph. Scale bars: A–G, 0.1 mm.