This final volume in the treatise Keys to Parastic Nematodes is devoted to the characters of five suborders of nematodes, compiled by five specialists. Suborder Trichocephalata and Diotophymata were compiled by K.I. Skryabin and N.P. Shikhobalova, and Rhabditata and Tylenchata by A.A. Sobolev and A.A. Paramonov. A.A. Sobolev analyzed the material on Camallanta, while V.E. Sudarikov compiled the chapter on the distribution of all known nematodes in different hosts recorded thus far, for all four volumes of this key. The importance of this volume is enhanced further by the most comprehensive index of animal hosts of all known parasitic nematodes reviewed. This comprehensive work is the first of its kind in helminthological literature; this type of treatise has never before been published in any country to date.

This book is the first in a series which forms a part of the rich Soviet helminthological literature published in recent years. It deals with 197 species of nematodes belonging to suborders Spirurata and Filariata, re-examining and revising earlier descriptions and concepts related to them. A historical survey of the taxonomy of worms is given first, with keys to the various major groups and diagnoses of the nematode subclasses and orders. Even at this stage, certain new and interesting ideas are put forward. After a general account of the morphology and anatomy of each suborder, a diagnosis of each genius is given, together with an outline and drawing of its type species.

Reprint of: CIH keys to the nematode parasites of vertebrates. Farnham Royal: Commonwealth Agricultural Bureaux, 1974-1983.

For many years the Keys have provided a working tool to those within the field and laboratory needing to know "what is this worm?" They have also helped to establish a classification, using associations of characters, that gives real insight into nematode relationships across the group and their lines of evolution. This supplementary volume is designed to complement the original CIH Keys, now reprinted as one volume, with the additional convenience of reordering into superfamily. The supplement includes revised and redescribed taxa and draws attention to new taxa, to generic level, published by many authors after the original Keys were complete. It also identifies the current position of some of the older genera not included in the original Keys.