Bathysabellaria

Opercular lobes completely fused (entire), operculum longer than wide or similar to maximum width or shorter. Operculum with distal end slope absent (opercular disc perpendicular to longitudinal axis); opercular papillae spherical, slightly longer than wide. Form of tentacular filaments simple (unbranched). Oral plates absent. Palps shorter or similar in length to operculum. Medial organ (cirrus) at dorsal junction of lobes present. Number of outer paleae 26–44; arrangement of outer paleae in semicircles. Angle of blades and axis of shafts geniculate (forming an angle); blade of outer paleae concave or excavated. Outer paleae denticles on lateral margins absent. Distal margins of outer paleae smooth. Outer paleae medial plume absent. Tip of outer paleae symetrical. Middle paleae absent. Number of inner paleae 11–20 pairs; inner paleae giving the appearance of 1 row. Arrangement of inner paleae in semicircles, angle of blades and axis of shafts straight; blade of inner paleae concave, excavated. Inner paleae with internal fusiform outline absent. Medial organ present. Nuchal spines or hooks present; number of nuchal spines or hooks 1 pairs; tip shape of spines straight, spinelike. Neuropodia on segment 1 with 1 pair(s) of cirri. Neurochaetae on segment 1 present. Number of lateral lobes on segment 2: 1 pair(s). Number of parathoracic segments 2. Thoracic branchiae absent. Parathoracic neurochaetae only capillary. Branchiae in posterior abdominal segments present, or absent. Abdominal uncini with 2 rows of teeth. Dorsal papillae absent.

Description generated from: Hutchings, P.A., Capa, M., & Peart, R. 2012. Revision of the Australian Sabellariidae (Polycheata) and description of eight new species. Zootaxa, 3306: 1-60.

Additional references:
Lechapt, J.P. and Gruet, Y. 1993. Bathysabellaria neocaledoniensis, a new genus and species of Sabellariidae (Annelida, Polychaeta) from the bathyal zones off New Caledonia (Southwest Pacific ocean). Zoologica Scripta, 22(3): 243-247.

New Caledonia; distribution within Australia: Does not occur in Australia.

Insufficient data.