Eusamythella Hartman, 1971

Prostomium anteriorly truncated, trilobed. Buccal tentacles smooth. Oral membrane elongate, smooth and folded. Prostomial dorsal glandular ridges absent. Branchiae 3 pairs. All branchiae similar, all smooth, none basally flanged. Branchiae in two groups inserted mid-dorsally, connected basally. Paleae on segment 3 present. Dorsal crest present, on segment 5. Nuchal (post branchial) hooks on segment 4 absent. Notopodia all similar. Notochaetae present from segment 6. Neuropodia present, tori of similar length throughout thorax. Segments 3–6 without neurochaetae. Number of pairs of thoracic uncinigers 12.

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:
Hartman, O. 1967. Polychaetous annelids collected by the USNS Eltanin and Staten Island cruises, chiefly from Antarctic Seas. Allan Hancock Monographs in Marine Biology 2, 1-387,51pl.;
Hartman, O and Fauchald, K. 1971. Deep-water benthic polychaetous annelids off New England to Bermuda and other North Atlantic Areas. Part II. Allan Hancock Monographs in Marine Biology 6, 1-327, pls1-34.;
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.