InhaltsangabeTaxonomy and Phylogeny.- Plathelminthes or Platyhelminthes?.- Two peculiar new genera of Typhloplanoida from the Western Indian Ocean.- Phylogenetic relationships within the Archiloa genus complex (Proseriata, Monocelididae).- An elaboration of the evolutionary morphological basis for the systematics of the Plathelminthes.- The basic organization of the Plathelminthes.- Aspects of the phylogeny of Platyhelminthes based on 18S ribosomal DNA and protonephridial ultrastructure.- 5S rRNA sequences of 12 species of flatworms: implications for the phylogeny of the Platyhelminthes.- Biogeography and Genetics.- Brackish-water Plathelminthes from the Faroe Islands.- Platyhelminths as paleogeographical indicators.- Taxonomy and geographical distribution of Dugesia japonica and D. ryukyuensis in the Far East.- Geographical distribution of Phagocata vivida in the Far East.- Chromosomes of Temnocephala minor, an ectosymbiotic turbellarian on Australian crayfish found in Kagoshima Prefecture, with karyological notes on exotic turbellarians found in Japan.- A review of chromosomal variation in Dugesia japonica and D. ryukyuensis in the Far East.- Chromosome bands in freshwater triclads.- Ecology and Behaviour.- Where Turbellaria? Concerning knowledge and ignorance of marine turbellarian ecology.- Stylochus tauricus, a predator of the barnacle Balanus improvisus in the Black Sea.- Predation behaviour of land planarians.- The influence of body size on immediate reproductive success in Dugesia gonocephala (Tricladida, Paludicola).- Reproductive behaviour in Dugesia gonocephala (Tricladida, Paludicola).- Anatomy and Ultrastructure.- The anatomy of Microplana termitophaga from Zimbabwe and Kenya: confirmation of the subfamily and genus.- Comparison of the nervous system of the rhabdocoel Mesostoma ehrenbergii with that of the polyclad Notoplana acticola.- Glyoxylic acid induced fluorescence in the nervous system of Gyratrix hermaphroditus (Kalyptorhynchia, Polycystididae).- The importance of the fixation of colour, pattern and form in tropical Pseudocerotidae (Platyhelminthes, Polycladida).- Structure and maintenance of the epidermis in Friedmaniella sp. (Prolecithophora).- A scanning electron microscope study of Craspedella sp. from the branchial chamber of redclaw crayfish, Cherax quadricarinatus, from Queensland, Australia.- An electron microscope study of primary epidermis formation in freshwater planarian embryos.- Ultrastructure of the epidermis of Meara stichopi (Platyhelminthes, Nemertodermatida) and associated extra-epidermal bacteria.- Ultrastructure and differentiation of ciliated pits in Microstomum lineare (Turbellaria, Macrostomida).- Ultrastructure of the ciliary pits in the Geocentrophora group (Platyhelminthes, Lecithoepitheliata).- A new type of photoreceptor in Anthopharynx sacculipenis (Plathelminthes, Solenopharyngidae).- Ultrastructure of the nerve cells and sensilla of Geocentrophora baltica (Platyhelminthes, Lecithoepitheliata) and the surface sensilla in the Geocentrophora group.- Structure and function of the reticular cell in the planarian Dugesia dorotocephala.- Fine structure of the astrocyte-like neuroglial cell in the planarian Dugesia dorotocephala.- Ultrastructural and cytochemical studies of the female gonad of Prorhynchus sp. (Platyhelminthes, Lecithoepitheliata).- The ultrastructure of the germarium in some Rhabdocoela.- Ultrastructure of oncospheral envelopes in Hymenolepidids (Cestoda) with aquatic life cycles.- Development and Regeneration.- What studies of turbellarian embryos can tell us about the evolution of developmental mechanisms.- Cellular succession in the epithelium lining the pharyngeal cavity of planarians.- Differentiation of the body wall musculature in Macrostomum and Hoploplana (Turbellaria, Platyhelminthes).- Autoradiographic studies of spermatogenesis in Dugesia bengalensis, Kawakatsu.- Never ending growth and a growth factor. II. Immunocytochemical evidence for the presence of epidermal gr