According to the
World Register of Marine Species, the following species with valid names are included within the genus
Acirsa : ;Species brought into synonymy: •
Acirsa annectens A. W. B. Powell, 1951: synonym of
Gregorioiscala annectens A. W. B. Powell, 1951 •
Acirsa berryi: synonym of
Couthouyella menesthoides Carpenter, 1864 •
Acirsa chitaniana Yokoyama, 1926: synonym of
Acirsa martensi de Boury, 1913 •
Acirsa corsicana Nordsieck F., 1974 : synonym of
Opalia coronata R. A. Philippi & Scacchi, 1840 •
Acirsa costulata: synonym of
Acirsa borealis Lyell, 1841 •
Acirsa exopleura : synonym of
Opalia exopleura Dall, 1917 •
Acirsa gracilis : synonym of
Periapta pandion Clench & Turner, 1952 •
Acirsa hedleyi de Boury, 1912: synonym of
Amaea hedleyi de Boury, 1912 •
Acirsa menesthoides: synonym of
Couthouyella menesthoides Carpenter, 1864 •
Acirsa morchi Angas, 1871: synonym of
Plastiscala morchi Angas, 1871 •
Acirsa praelonga Jeffreys, 1877: synonym of
Papuliscala praelonga Jeffreys, 1877 •
Acirsa sarsii Kobelt, 1903: synonym of
Gregorioiscala sarsii Kobelt, 1903 •
Acirsa subcarinata (Murdoch, R. & H. Suter, 1906): synonym of
Aclis subcarinata (Murdoch, R. & H. Suter, 1906) •
Acirsa undulata: synonym of
Acirsa borealis Lyell, 1841 Some new species (
Acirsa alpha,
Acirsa beta,
Acirsa delta, and
Acirsa epsilon) have been named by Squires and Saul in 2003. ==References==