| Summary: | Nothria digitata sp. nov. urn:lsid:zoobank.org:act: 02457FA3-9067-4E97-B6EE-94AB977859D0 Figs 1, 9–11, Tables 2, S 1 Holotype . SAMA E8969, IN2015 _C02_174; 8 Dec 2015; Australia, Southern Ocean, Great Australian Bight, 34.25– 34.24°S 132.62°E; 400 m depth. Paratypes (3): SAMA E8970, IN2015 _C02_174 (1); AM W.49953, IN2015 _ C02_174 (1, anterior part on SEM pin, posterior part wet specimen); AM W.49954, IN2015 _C02_174 (1). Description . All specimens lacking posterior ends. Length of holotype 18 mm for 22 chaetigers, width 2.3 mm; paratypes 9–19 mm (13–24 chaetigers) long, 2.2–2.3 mm wide. Alcohol-stored specimens overall whitish without any pigmentation. Prostomium anteriorly rounded, wider than long, with 2 ovoid frontal lips separated by small space (Fig. 9A,B). Palpo- and antennophores with 3–4 proximal rings and longer distal ring. Palpostyles tapering, extending to chaetiger 1, antennostyles tapering gradually, lateral antennostyles extending to chaetiger 8 (7–8), median antennostyle generally longest, extending to chaetiger 9 (7–9); slightly shorter one in W.49953 (Fig. 9A) atypical. Nuchal grooves straight, with small middorsal separation. Small anterior eyespots on anterior part of prostomium between palps and lateral antennae (only left one visible in holotype), large posterior eyes between bases of palps and lateral antennae next to peristomium. Ventral upper lip squared with median section, lower lip subtriangular (Fig. 9B). Peristomium short, peristomial cirri inserted subdistally on peristomium, about twice as long as peristomium (Fig. 9A). First chaetiger enlarged, slightly more than twice as long as peristomium, chaetiger 3 similar in length to following chaetigers. Anterior three pairs of parapodia modified (Fig. 9A,B). First pair greatly enlarged, directed forward, extending beyond anterior margin of prostomium, with large auricular prechaetal lobes and subulate postchaetal lobes. Parapodia 2 and 3 similar but smaller, with smaller prechaetal lobes. Third pair similar to subsequent parapodia, ...
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