Fig. 3

Light microscopic images of Typosyllis antoni, neutral red staining. Anterior end upper left, all images are dorsal views. a Modified foregut with proventricle (p), ventricle (v) and caeca (ca). b Higher magnification of proventricle surface. c Higher magnification of left caecum (c). Abbreviations: ca, caecum; g, gut; p, proventricle; v, ventricle. Scale bar = 100 μm