''Bathynoe'' is a genus of marine

annelid The annelids (Annelida , from Latin ', "little ring"), also known as the segmented worms, are a large phylum, with over 22,000 extant species including ragworms, earthworms, and leeches. The species exist in and have adapted to various ecol ...

s in the family Polynoidae (scale worms). The genus includes 6 species, 5 of which occur in the Pacific Ocean while one occurs in the Atlantic Ocean. ''Bathynoe'' species have been recorded from depths of about 500 – 3000 m.

Description

Body short, 39 segments, 16 pairs of elytra. Anterior margin of prostomium with a pair of acute anterior peaks. Lateral antennae inserted ventrally (beneath prostomium and median antenna). Palps, antennae, dorsal and ventral cirri with papillae. Notochaetae about as thick as neurochaetae. Unidentate and bidentate neurochaetae present.Ruff, R.E. (1991) A new species of Bathynoe (Polychaeta: Polynoidae) from the northeast Pacific Ocean commensal with two species of deep-water asteroids. Ophelia Supplement 5, 219–230 Species of ''Bathynoe'' may have about 28 to 43 segments and 10–24 pairs of elytra. The elytra are large but leave the middle of dorsum uncovered, they have several large mounds and are covered with much smaller conical microtubercles. The prostomium is bilobed and cephalic peaks are absent, The median antenna is dorsal on the anteriormost part of the prostomium with the lateral antennae in a ventral position. The dorsal surface of the body has 1 to 3 tubercles on all or most segments. The

neuropodia In invertebrates, the term parapodium ( Gr. ''para'', beyond or beside + ''podia'', feet; plural: parapodia) refers to lateral outgrowths or protrusions from the body. Parapodia are predominantly found in annelids, where they are paired, unjointed ...

are rounded and the neurochaetae have transverse rows of very fine teeth and all have a simple unidentate tip. Notochaetae are absent.

Species

Six valid species of ''Bathynoe'' are known as of September 2020: *'' Bathynoe abyssicola'' (Imajima, 2009) *'' Bathynoe cascadiensis'' Ruff, 1991 *'' Bathynoe nodulosa'' Ditlevsen, 1917 *'' Bathynoe pacifica'' Uschakov, 1950 *'' Bathynoe pustulata'' (Horst, 1915) *'' Bathynoe tuberculata'' (Treadwell, 1906)

References

{{Taxonbar, from=Q3917529 Animals described in 1917 Phyllodocida Annelid genera