Deep-sea nematodes (Nemata, Prochaetosomatinae): new taxa from hydrothermal vents and a polymetallic nodule formation of the Pacific (East Rise; North Fiji and Lau basins; Clarion-Clipperton fracture zone). Zoologica Scripta, 26(1), January 1997: 1-12. 2 [Zoological Record Volume 134]