Higher classification of the Monostilifera (Nemertea: Hoplonemertea) Author Kajihara, Hiroshi text Zootaxa 2021 2021-01-28 4920 2 151 199 journal article 8401 10.11646/zootaxa.4920.2.1 ec1a3d33-651e-499c-b775-b42a131ec75a 1175-5326 4475126 C369AA2D-29D5-4DDF-BFE2-EA4FC4AD2703 Verrillianemertes schultzei Senz, 2001 Remarks Described based on four specimens from Umm al-Dalkh oil field in the Persian Gulf, off the United Arab Emirates , up to 3 mm in body length. With two to six eyes. The rhynchocoel is half the length of the body; its wall is mainly composed of circular muscle fibres, but longitudinal muscle fibres are also interwoven to varying degrees, a condition otherwise not hitherto reported in Monostilifera . The cerebral organs are simple, reaching back to 66% of the pre-septal region; the position of the organs thus differs from that in Cratenemertea .A stylet apparatus is missing from V. schultzei . Whether or not the mid-dorsal vessel forms a vascular plug is unknown. While the type species of the genus Verrillianemertes rathkei Senz, 2001 likely belongs in Amphiporina , V. schultzei cannot be placed with certainty in any of the higher taxon recognized in this paper.