Fig. 2. Conduction pathways involved in feeding in Aglantha digitale. (A) Vertical section, apex of bell upwards, showing general structural relationships and distribution of neural elements having FMRFamide-like immunoreactivity (after Mackie et al., 1985). (B) Diagram of a transverse section through a subumbrellar radial strand showing the relationship between the radial canal, the small axon bundle and the giant axon.