De Ley & Coomans 1997. Terrestrial nematodes from the Galapagos Archipelago. 7. Description of Tylocephalus nimius sp.n. and new data on the morphology, development and behaviour of T. auriculatus (Butschli, 1873) Anderson, 1966 (Leptolaimina: Plectidae). Fundamental and Applied Nematology, 20(3) 1997: 213-228