Fig. 15 in Three Species of Ribbon Worms (Nemertea) from Cebu, the Philippines

Fig. 15. Coella gloriae sp. nov., photomicrographs of transverse sections through cerebral organ, holotype, PNM 4648. A–D, Canal leading medio-posteriorly to fuse with neuronal component; E–I, canal bifurcating into lateral and medial ducts; J–P, medial canal surrounded by sensory cells; Q–S, glandular component posteriorly in close contact with blood vessel and excretory collecting tubules; black arrowheads (C–G) indicating anterior nerve from brain, not innervating cerebral organ; white arrowheads (H, I) indicating cerebral-organ nerve fibres.