TY  - JOUR
AB  - The genus Potamilla Malmgren is particularly characterized by dorsal lips which lack any radiolar midrib; Pseudopotamilla Bush by compound radiolar eyes, dorsal collar lappets and flanges alongside the bases of the most dorsal radioles; Demonax Kinberg by a wide dorsal collar gap and companion setae with big heads and narrow blades; and Potamethus Chamberlin by an elongated first segment, enlarged ventral sacs, very long shafts to the thoracic uncini, and inferior abdominal setae much shorter than the superior ones. Perkinsiana gen. nov. lacks most of these characters, but the type species ‘Potamilla’ rubra Langerhans is remarkable in having red blood. It bores into limestone abundantly off S Wales and is here redescribed. Oriopsis hynensis sp. nov. from SW Ireland has a smooth collar set low on the first segment, with its ventral margin entire and free from the apex of the peristome. The new name Demonax langerhansi is proposed for Sabella (Potamilla) incerta Langerhans non Demonax incertus Kinberg.
A1  - Knight-Jones, Phyllis
DO  - 10.1111/j.1096-3642.1983.tb01167.x
JO  - Zoological Journal of the Linnean Society, London
N1  - World Polychaeta Database (WPolyDb)
SP  - 245
EP  - 295
C1  - 79: 245-295
TI  - Contributions to the taxonomy of Sabellidae (Polychaeta
UR  - https://academic.oup.com/zoolinnean/article-abstract/79/3/245/2661635
VL  - 79
PY  - 1983
Y2  - 2026-05-14
ER  -