On a new Antarctic species of Symplectoscyphus Marktanner-Turneretscher, 1890 (Cnidaria, Hydrozoa, Sertulariidae), with an annotated checklist of the Antarctic species of the genus Author Peña, Álvaro L. text Zootaxa 2010 2494 29 44 journal article 10.5281/zenodo.195709 c2c8f51a-8076-4772-9dae-b2cd9469f545 1175-5326 195709 Symplectoscyphus aggregatus ( Jäderholm, 1917 ) Sertularella aggregata Jäderholm 1917 : 13 , pl. 2, fig. 1. Symplectoscyphus aggregatus – Stechow 1922 : 148 ; 1923: 171; Vervoort 1993 : 239 ; Peña Cantero et al. 2002 : 1514 , fig. 1. Not Sertularella aggregata – Stepanjants 1979 : 82 , pl. 15, fig. 2A, B [= Symplectoscyphus liouvillei ( Billard, 1914 ) ] Ecology. Shelf species, collected at 150 m ( Jäderholm 1917 ). Distribution. Only known from off Graham Land, in the Antarctic Peninsula region ( Jäderholm 1917 ).