Macellicephala, MCINTOSH, 1885

Bonifácio, Paulo & Menot, Lénaïck, 2019, New genera and species from the Equatorial Pacific provide phylogenetic insights into deep-sea Polynoidae (Annelida), Zoological Journal of the Linnean Society 185, pp. 555-635 : 602

MACELLICEPHALA MCINTOSH, 1885

Macellicephala McIntosh, 1885: 121 . – Uschakov, 1955: 312. – Uschakov, 1965: 106 (translated version). – Day, 1967: 44. – Hartmann-Schröder, 1971: 76. – Levenstein, 1971b: 18. – Hartmann-Schröder, 1974: 76. – Pettibone, 1976: 8. – Fauchald, 1977: 63. – Uschakov, 1982: 111 (translated version). – Jirkov, 2001: 130. – Barnich & Fiege, 2003: 92.

Oligolepis Levinsen, 1886: 292 .

Type species: Polynoe (Macellicephala) mirabilis McIntosh, 1885 , by monotypy.

Diagnosis: Short body, dorsally flattened, 18 segments. Prostomium bilobed. Frontal filaments present ( Macellicephala aciculata , Macellicephala australis , Macellicephala clarionensis sp. nov., Macellicephala mirabilis , Macellicephala parvafauces sp. nov., Macellicephala remigata and Macellicephala violacea ) or absent ( Macellicephala galapagensis , Macellicephala laubieri and Macellicephala longipalpata ). Eyes absent. Median antenna present, lateral antennae absent. Tentaculophores without acicula or chaetae. Pharynx with two pairs of jaws, smooth margin; with nine pairs of papillae. Dorsal tubercles present ( Macellicephala galapagensis , Macellicephala remigata and Macellicephala violacea ) or absent/inconspicuous ( Macellicephala aciculata , Macellicephala atlantica , Macellicephala australis , Macellicephala laubieri , Macellicephala longipalpata and Macellicephala mirabilis ). Elytrophores prominent, nine pairs, on segments 2, 4, 5, 7, 9, 11, 13, 15 and 17. Parapodia subbiramous, notopodia shorter than neuropodia; noto- and neuropodia with elongate acicular lobe; tips of noto- and neuroaciculae not penetrating epidermis. Notochaetae few to moderate in number, smooth or spinous; notochaetae stouter or more slender than neurochaetae. Neurochaetae very numerous. From segment 3, ventral cirri inserted medially on neuropodia. Nephridial papillae present usually large, on segments 10, 11 and 12 ( Macellicephala aciculata , Macellicephala australis , Macellicephala clarionensis sp. nov., Macellicephala laubieri , Macellicephala longipalpata , Macellicephala mirabilis , Macellicephala parvafauces sp. nov. and Macellicephala violacea ) or on segments 9, 10 and 11 ( Macellicephala remigata ); or absent ( Macellicephala galapagensis ). Pygidium bulbous, with dorsal anus.