Protoaricinae gen. spp. Fig. 18F

Diagnosis.

Body long and thin, <95 chaetigers, <15 mm long and 0.5 mm wide; without clear division on thorax and abdomen; parapodia not shifting dorsally in posterior segments. Prostomium short, bluntly conical with round tip; two peristomial rings. Branchiae from chaetiger 15-30 as short lobes, becoming very long and prominent on posterior segments. Parapodia with widely arranged rami, chaetal tufts emerging from low tubercles. Anterior neuropodia without postchaetal lobes, short conical lobes appearing ~ chaetiger 7 or beyond, becoming long posteriorward, disappearing in posterior segments; some specimens without neuropodial lobes. No notopodial postchaetal lobes. Notopodia and neuropodia with crenulated capillaries and long thin acicular spines in all segments; spines absent in juveniles. Pygidium with two lobes. Colour in ethanol white.

Remarks.

Genus is uncertain, probably new. Two morphospecies: one with neuropodial postchaetal lobes and another without.

Records.

127 specimens. Suppl. material 1: op. 100 (AM).