Fig. 5

Coelomic structures of Stephanella hina. a Lateral view of a solitary zooid of Stephanella hina, showing body-wall musculature as well as coelomocytes within the coelomic cavity. b Lateral view of the proximal part of a zooid, showing the regular arrangement of ciliary fields of the peritoneal lining of the coelomic cavity as well as strands of retractor muscle fibres traversing the same. Abbreviations: bm – body-wall musculature, cae – caecum, cc – coelomocyte, cf – ciliary fields of ther peritoneal epithelium, rm – retractor muscle fibres, s - stolon