1: external seminal groove runs along neck from common genital aperture (9, concealed just within anterior of right parapodial lobe) to penial aperture near base of right oral tentacle
2: semi-prone parapodium revealing enclosed anatomical features. (severed surface on dissection, from Eales, 1921).
3: mantle covering shell.
4: round foramen in mantle exposes part of concealed shell.
5: part of mantle forms erect funnel with anus near base.
6: lobate gill, affixed at its anterior end, in narrow mantle-cavity (7) on right of parapodial enclosure.
8: anus. 10: opaline gland
No obvious inhalent siphon (Jeffreys,1869, suggested inflow via foramen; seems unlikely). Water probably taken in at anterior between parapodial flaps to underside of mantle-covered shell and then into narrow mantle cavity on right containing gill.

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