Review of the Capitellidae (Annelida, Polychaeta) from the Eastern Tropical Pacific region, with notes on selected species Author Garcia-Garza, Maria Elena Author Leon-Gonzalez, Jesus Angel De text ZooKeys 2011 151 17 52 http://dx.doi.org/10.3897/zookeys.151.1964 journal article http://dx.doi.org/10.3897/zookeys.151.1964 1313-2970-151-17 Notomastus magnus Hartman, 1947 Dasybranchus giganteus : Moore 1909 : 279. Notomastus giganteus : Berkeley and Berkeley 1941 : 48. Notomastus magnus : Hartman 1947 : 412, Pl.50, figs 1-6; 1961:35; 1963:63; 1969:401, figs 1-6; Reish 1963 : 429; Blake 2000 : 83, fig. 4.14. Type locality. USA: California, Tomales Bay. Type material. (1)Paratype (LACM-POLY 0413) and 1 Paratype (LACM-POLY 2217). Material examined. (6 specimens) Baja California Sur: Magdalena Bay [ 25°36'8"N , 112°0'8"W ] (1 specimen), 1.5 m, December 6 1996, Coll. JALG; Sonora: Puerto Penasco , La Cholla Bay [ 31°20'37.8"N , 113°38'01.7"W ] (5 specimens), 1.5 m, August 7 2006, Coll. JALG and MEGG. Records. USA: California ( Moore 1909 as Dasybranchus giganteus ; Berkeley & Berkeley 1941 as Notomastus giganteus ; Hartman 1947 , 1961, 1963 , 1969 , Blake 2000 ) Mexico : Western coast of Baja California Sur and Northern Gulf of California, Sonora (present study)