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Host Index. In contrast to the fi rst edition of the book, now the illustrations are placed directly in the respective texts, which makes the use of the book for readers easier. Like in the author’s earlier volumes, the description, hosts, localization, distribution and relevant notes are given for each species. The majority of species are also illustrated, with line drawings and few SEM micrographs taken from the original papers. The survey contains almost all nematode species described to date from fi shes of this geographical region, including those which have already been synonymized with others (this being mentioned in accompanying remarks) or the forms (e.g. Cylicostrongylus, Furconema, Ichthyostrongylus, Neocylicostrongylus, Neoichthyostrongylus, Premana, Pseudomazzia, Rastellascaris, Spirocotyle) that are evidently doubtful. On the other hand, representatives of Hakynema, Ichthyouris, Neosynodontisia and Royandersonia (all Oxyuroidea) and Orientatractis (Cosmocercoidea), as well as Camallanus hampalae, Oceanicucullanus chitwoodae, Procamallanus punctatus or Rhabdochona equispiculata, reported from fi shes in Thailand, Malaysia and Vietnam, are missing. Although the author of this monograph has stated that the nematode fauna of fi shes in South Asia is “fairly well known”, this survey again documents the unsatisfactory situation in the taxonomy of these parasites in this region where, usually without a critical evaluation of previous data, a number of additional, mostly poorly described species are newly established, resulting in an apparent infl ation of species. For example, Kakar et al. (2011) reported 17 (!) poorly described species of Rhabdochona from three species of fi shes of Balochistan, Pakistan, although representatives of this genus are known to exhibit a rather high degree of host specifi city. Therefore, future detailed taxonomic revisions in individual groups of these nematodes will undoubtedly reduce considerably the number of species of fi sh nematodes in this region. Nevertheless, this monograph represents one of the fundamental ichthyoparasitological works in the countries of South Asia and may become a basis for subsequent revisions of taxonomy as well as studies on the biology, ecology and zoogeography of fi sh nematode parasites in this region. It will serve as an important source of information for parasitologists, biologists, veterinarians, workers in fi sheries and university students, although it will also be of interest to ichthyologists, museum curators and those engaged in nature conservation.

M. L. Sood: Fish nematodes from South Asia. Second revised and enlarged edition