Figure 4 in Carcinoecium-Forming Sea Anemone Stylobates calcifer sp. nov. (Cnidaria, Actiniaria, Actiniidae) from the Japanese Deep-Sea Floor: A Taxonomical Description with Its Ecological Observations

Figure 4. Histological section of a column of Stylobates calcifer sp. nov. (paratype: CMNH-ZG09775). (A) The entire transverse serial section of the actinopharynx. The cycle of mesenteries is indicated by numbers (asterisk indicates directive mesentery). (i) The upper transverse section near the tentacles and mouth. (ii) The transverse section of the middle of the column. (B) The full view of the ventral directives (first mesenteries), diffuse longitudinal muscles, and siphonoglyph. (C) The enlarged view of the second and third mesenteries and diffuse longitudinal muscles. (D) The parieto-basilar muscle of the second mesenteries. a, actinopharynx; dm, directive mesentery; mf, mesenterial filament; mo, matured ovary cyst; pbm, pariental basilar muscle; rm, retractor muscle; s, siphonoglyph.