Mooresamytha  

Prostomium anteriorly truncated. Buccal tentacles smooth. Prostomial dorsal glandular ridges absent. Branchiae 4 pairs. All branchiae similar, all smooth. All branchial pairs arranged in a distinctly segmental fashion. Paleae on segment 3 absent. Dorsal crest absent. Nuchal (post branchial) hooks on segment 4 absent. Notopodia all similar. Notochaetae all smooth. Neuropodia present. Segments 3–6 without neurochaetae. Number of pairs of thoracic uncinigers 14. Abdominal notopodial rudiments present. Anal cirri present, 1 pair.

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:
Williams, SJ. 1987. Taxonomic Notes on some Ampharetidae (Polychaeta) from Southern California. Bulletin of the Biological Society of Washington 7, 251-258.