New Orthalicidae (Mollusca, Gastropoda) from Venezuelan Guayana: unravelling secrets from the Lost World Author Breure, Abraham S. H. text Zootaxa 2009 2065 25 50 journal article 10.5281/zenodo.186920 695e995e-3a9a-41b8-bafa-ed8366b37ef4 1175-5326 186920 Genus Plekocheilus Guilding, 1828 Type species: Voluta aurissileni Born, 1780