EOL-media-587-zookeys.341.5816.sp_3_p_1

Figure 5.Bunodosoma cavernatum. A Live specimen in natural habitat B Oral view C Lateral view D Detail of directives; notice siphonoglyph E Cross section through proximal column showing oocytes F Cross section through tentacle G Longitudinal section through column showing vesicles H Longitudinal section though base showing basilar muscles I Longitudinal section through margin showing acrorhagi and marginal sphincter muscle J–T Cnidae.– acrorhagi: J basitrich K holotrich; actinopharynx: L basitrich M microbasic p-mastigophore; column: N small basitrich O basitrich; filament: P basitrich Q microbasic b-mastigophore R microbasic p-mastigophore; tentacle S basitrich T spirocyst. Abbreviations.– acr: acrorhagi, bm: basilar muscle, c: column, d: directives, e: epidermis, fo: fosse, g: gastrodermis, lm: longitudinal muscles, m: mesoglea, mp: marginal projection, o: oocyst, od: oral disc, pd: pedal disc, pm: parietobasilar muscle, rm: retractor muscle, s: siphonoglyph, sp: sphincter, t: tentacle, vs: vesicles. Scale bars: A–C: 10 mm; D–I: 200 μm; J–T: 25 μm.