FIGURE 3
Abarenicola dissected to show major features of internal anatomy. Ant. oes. caec. — Anterior oesophageal caecum, Br. aff. — Afferent branchial vessel, Br. eff. — Efferent branchial vessel, Br. Nn. — Annulus branch nerve, Chloro. tiss. — Chlorogogenous tissue, Dors. B.V. — Dorsal blood vessel, Dphm. — first 2 anterior septa, Long. mm. — Longitudinal muscle, mm. Para. prof.— Parapodial protractor muscles, mm. Para. ret. — Parapodial retractor muscles, Mth. — Mouth, Neph. f. — Nephridial funnel, (Nephrostome) Neph. sac — Nephridial sac, N.C. — Ventral nerve cord, New. B.V. — Neural blood vessel, Oes caec. — Oesophageal caeca, Para 1 -Para XIX — Parapodia, Phar. — Pharynx, Seg. eff. B.V.— Segmental efferent blood vessel, T. dphm. — Tail septum, Vas. gut. ret. — Vascular reticulum of gut, Vent. B.V. — Ventral blood vessel.