Figure 8
Sections of Hislopia malayensis budding stage 5. (a) Section through parts of the almost fully differentiated gut in particular the prominent proventriculus. The arrow points to the cuticular inner lining of the latter. (b) Longitudinal section through the lophophoral base and foregut showing the typical cone-shape of the pharynx. (c) Longitudinal section through the lophophoral base and the now compact ganglion. Abbreviations: a - atrium, cw - cystid wall, ggl - ganglion, int - intestine, itp - intertentacular pit, lc - lophophoral coelom, mpv - muscular sheath of the proventriculus, ph - pharynx, pt - peritoneum, pv - proventriculus, pve - tube-like extension of the proventriculus towards the esophagus, rm - retractor muscle fibres, st - stomach, t - tentacle, tc - tentacle coelom, ts - tentacle sheath. Scale bar = 50 μm.