Pleurobranchaea is a genus of sea slugs, specifically sidegill slugs or notaspideans. These are marine gastropod molluscs in the family Pleurobranchaeidae. The genus is differentiated from other sidegill slugs by its rhinophores, which are well separated, rather than being joined under the notum. This genus has recently been coined sea owls which is the common name in Japanese for Pleurobranchaea japonica. Species Species in the genus Pleurobranchaea include: Pleurobranchaea agassizii R. Bergh, 1897 Pleurobranchaea augusta Ev. Marcus & Gosliner, 1984 Pleurobranchaea brockii Bergh, 1897 Pleurobranchaea bubala Marcus and Gosliner, 1984 Pleurobranchaea californica MacFarland, 1966 Pleurobranchaea catherinae Dayrat, 2001 Pleurobranchaea gela Er. Marcus & Ev. Marcus, 1966 Pleurobranchaea inconspicua Bergh, 1897 Pleurobranchaea japonica J. Thiele, 1925 Pleurobranchaea maculata (Quoy and Gaimard, 1832) Pleurobranchaea meckeli (Blainville, 1825) Pleurobranchaea morosa (Bergh, 1892) Pleurobranchaea obesa (A. E. Verrill, 1882) Pleurobranchaea spiroporphyra Alvim, Simone & Pimenta, 2014 Pleurobranchaea tarda A. E. Verrill, 1880 Species brought into synonymy Pleurobranchaea bonnieae Ev. Marcus and Gosliner, 1984 : synonym of Pleurobranchaea inconspicua Bergh, 1897 Pleurobranchaea chiajei Locard, 1886: synonym of Pleurobranchaea meckeli (Blainville, 1825) Pleurobranchaea confusa Ev. Marcus & Gosliner, 1984: synonym of Pleurobranchaea obesa (A. E. Verrill, 1882) Pleurobranchaea dellechiaii Vérany, 1846: synonym of Pleurobranchaea meckeli (Blainville, 1825) Pleurobranchaea gemini Macnae, 1962: synonym of Pleurobranchaea brockii Bergh, 1897 Pleurobranchaea hamva Er. Marcus & Ev. Marcus, 1955: synonym of Pleurobranchaea inconspicua Bergh, 1897 Pleurobranchaea hedgpethi Abbott, 1952: synonym of Pleurobranchaea inconspicua Bergh, 1897 Pleurobranchaea notmec Ev. Marcus & Gosliner, 1984: synonym of Pleurobranchaea meckeli (Blainville, 1825) Pleurobranchaea novaezealandiae Cheeseman, 1878: synonym of Pleurobranchaea maculata (Quoy & Gaimard, 1832) Pleurobranchaea vayssierei Ev. Marcus & Gosliner, 1984: synonym of Pleurobranchaea meckeli (Blainville, 1825) References Pleurobranchaeidae