Catalogue of Notomastus M. Sars, 1851 (Annelida, Capitellidae) and the description of a new species from the Gulf of California Author García-Garza, María Elena Author León-González, Jesús Angel De Author Tovar-Hernández, María Ana text Zootaxa 2019 2019-04-05 4577 2 249 273 journal article 27382 10.11646/zootaxa.4577.2.2 627c5262-5f05-45f3-a88e-dd2cfeec5043 1175-5326 2629701 C61988A5-561D-4E34-9C0B-2E8BFF23BF25 7. Notomastus anoculatus Hartmann-Schröder, 1965 ( Fig. 2f ) Notomastus ( Clistomastus ) anoculatus Hartmann-Schröder, 1965 : 150 , fig. 78.— Magalhães & Bailey-Brock 2012 : 41 –42. Type material: * Holotype ( ZMH-P15102 ). Type locality: Eastern Pacific , USA , Hawaii Oahu , Kaneohe Bay , Korallensand , April 17, 1959 , on coral sand, littoral . Records: Only known from the type locality. Remarks: Magalhães and Bailey-Brock (2012) mentioned that N. ( C. ) anoculatus presents similarities with N. tenuis Moore, 1909 , particularly on the anterior region and thoracic segments. Based on the examination of type material of N. anoculatus (ZMH-P15102) and N. tenuis (CAS-019718), we realized that there are differences between both species as described below. Notomastus anoculatus has a prostomium with palpode, a tessellated epithelium from the first to the sixth chaetiger, abdominal notopodia very close to each other, and neuropodial lobes expanded to the dorsal part. Notomastus tenuis has a prostomium without palpode, the epithelium is smooth along the body, abdominal notopodia are widely separated and located dorso-laterally, and without neuropodial lobes. Therefore, we consider the validity of N. anoculatus .