Amage

Prostomium anteriorly truncated, trilobed. Buccal tentacles smooth. Oral membrane short, smooth and folded. Prostomial dorsal glandular ridges present. Branchiae 4 pairs. All branchiae similar, all smooth, none basally flanged. All branchial pairs arranged in a distinctly segmental fashion, 2 pairs on segment 3, 1 pair on segment 4, and the last pair on segment 5. Paleae on segment 3 absent. Dorsal crest absent. Nuchal (post branchial) hooks on segment 4 absent. Notopodia all similar. Notochaetae all smooth, present from segment 4. Neuropodia present, tori of similar length throughout thorax. Segments 3–6 without neurochaetae. Number of pairs of thoracic uncinigers 11. Abdominal notopodial rudiments present. Anal cirri present, 2 pairs.

Description generated from: Hutchings, PA & Johnson, RT, 2003. Australian Ampharetidae (Polychaeta) DELTA database. In Wilson RS, Hutchings PA & Glasby CJ (eds) Polychaetes: Interactive Identification and Information Retrieval. CSIRO Publishing, Melbourne.

Additional references:
Fauchald, K. 1977. The polychaete worms. Definitions and keys to the orders, families and genera. Natural History Museum of Los Angeles County, Science Series 28, 1-188.;
Holthe, T. 1986. Polychaeta Terebellomorpha from the northern Norwegian Sea and the Polar Sea, with descriptions of Mugga bathyalis sp.n. and Ymerana pteropoda gen. and sp.n. Sarsia 71, 227-234.;
Holthe, T. 1986. Polychaeta Terebellomorpha. Norwegian University Press, Norway.
Reuscher, M., Fiege, D., & Wehe, T. (2009). Four new species of Ampharetidae (Annelida: Polychaeta) from Pacific hot vents and cold seeps, with a key and synoptic table of characters for all genera. Zootaxa, 2191, 1-40.

Australia, South America, Pacific coast. Distribution within Australia: South-eastern Australia. This genus has a mostly eastern Pacific distribution.

Slope, deep sea.