This collection includes name-bearing nematode slides (holo- and paratypes) and is hosted by the National Plant Protection Organization, Wageningen, The Netherlands, in cooperation with Wageningen University. NCE maintains nearly 3.600 accessions of types originating from terrestrial, freshwater and marine habitats world-wide, excluding parasites of higher Animalia. Via the menu item 'Types' (via main menu 'Collections', submenu 'Netherlands') you can easily search within the type collection. The unique WT numbers refers to “Wageningen Type” numbers, and are available for authors when depositing types in the NCE collection. The former name of this NCE collection part was Wageningen Nematoden Collection (WaNeCo).