Idanthyrsus Kinberg, 1867: 350 Kirtley, 1994: 84 Capa et al., 2012: 261 3306 Hutchings, Pat Capa, María Peart, Rachael Zootaxa 2012 2012-05-09 3306 1 60   Capa et al., 2012: 261  87GJL Kinberg, 1867 Kinberg 1867 [151,481,222,248] Polychaeta Sabellariidae Idanthyrsus Animalia 5 6 Annelida genus      Idanthyrsus Kinberg, 1867: 350.  Kirtley, 1994: 84.   Capaet al., 2012: 261.   Typespecies.  Idanthyrsus macropaleus Schmarda, 1861(after Kirtley 1994).   Typelocality. Valparaiso Harbour, Chile.    Diagnosis.Outer paleae straight (no angle between shaft and blade), flat and with pointed denticles along lateral margins and distal tips. Three thoracic segments and, if confirmed in all species of the genus, only fine lanceolate chaetae on neuropodia of parathoracic segments.    Remarks.Before the present study there were 19 accepted species in the genus  Idanthyrsus( Kirtley 1994; Nishi and Kirtley 1999). We have synonymised  I. glaessneriwith  I. australiensisand described an additional two new species increasing the total number of valid species to 20 (see Table 1). [151,562,354,376] Chile Harbour 5 6 1 Valparaiso holotype