See:
DE LEY, P. & COOMANS, A. (1997). Terrestrial nematodes from the
Galápagos Archipelago. 7. Description of Tylocephalus nimius
sp. n. and new data on the morphology, development and behaviour of Tylocephalus
auriculatus (Bütschli, 1873) Anderson, 1966 (Leptolaimida: Plectidae).
Fundamental and Applied Nematology, 20: 213-228.