Platynereis Kinberg 1865

Platynereis Kinberg, 1865

Platynereis Kinberg, 1865: 177.

Type-species. Platynereis magalhaensis Kinberg, 1865 by subsequent designation.

Diagnosis. Frontal antennae present, 1 pair. Palpophore with transverse groove present, palpostyles conical. Prostomium with entire anterior margin. Eyes present, 2 pairs. One apodous anterior segment, greater than length of chaetiger 1. Tentacular cirri with distinct cirrophores. Jaws with dentate cutting edge. Maxillary ring of pharynx with paragnaths; pectinate rows. Oral ring paragnaths present; pectinate rows. Dorsal notopodial ligule present. Prechaetal notopodial lobe present. Ventral notopodial ligule present. Dorsal cirrus simple, lacking basal cirrophore. Neuropodial postchaetal lobe absent. Ventral neuropodial ligule of anterior chaetigers present. Ventral cirri single. Notoaciculae absent from segments 1 and 2. Notochaetae are homogomph spinigers present, homogomph falcigers (may be absent); terminal tendon present with articulation fused on some segments. Neurochaetae dorsally homogomph spinigers, heterogomph falcigers; blades having teeth only slightly longer proximally than distally. Neurochaetae ventrally are heterogomph spinigers, heterogomph falcigers; blades of lacking distinct tendon on terminal tooth. Anal cirri cirriform or conical.