Abyssoninoe Orensanz, 1990

Type species. Lumbriconereis abyssorum McIntosh, 1885

Diagnosis. Prostomium without antennae, without eyes; notopodia slightly developed; without branchiae; limbate simple multidentate hooded hooks and simple multidentate hooded hooks present; pygidium with anal cirri; maxillary apparatus with four pairs of maxillae, carriers as long as MI, joined to entire base of MI; MI forceps-like without inner accessory teeth, with attachment lamella; MII as long as MI, with ligament, attachment lamella wide along 2/3 of posterior lateral edge; without connecting plates; MIII completely pigmented, attachment lamella wide along entire lateral edge; MIV completely pigmented, attachment lamella wide. Mandible fused up to 3/4 of its length.