Brachychthoniidae). {Acarologica Genavensia CVII). -All published records and newly determined Swiss moss mites belonging to the family Brachychthoniidae are listed, discussed or described. From the 25 named species in the literature 16 are confirmed after critical discussion. New identifications of 28 species are given: 2 of which (Liochthonius tumidus sp. n. and Liochthonius tumulosus sp. n.) are new to science, 15 species are new for the Fauna of Switzerland and 5 are confirmations for the Swiss territory of doubtful species in the literature. As a synthesis a preliminary list of 36 Brachychthoniidae species belonging to 8 genera from Switzerland is given.

A list of newly collected and identified oribatids from Kenya is presented, two of them represent new genera; Sceletoppia gen. nov. (Oppiidae) and Mahnertozetes gen. nov. (Haplozetidae). Twelve species, belonging to the families Steganacaridae, Lohmanniidae, Tetracondylidae, Microzetidae, Zetomotrichidae and Galumnidae are new to science. Taxonomical notes on two other species are given.

Oribatidsfrom Switzerland VIII (Acari: Oribatida: Ptyctima). (Acarologica Genavensia CII). -Earlier published and newly determined Swiss moss mites belonging to the "ptychoid" groups are listed, discussed or described. From the 20 named species in the literature 10 are confirmed after critical discussion. New identifications of a total of 42 taxa are given, 3 of which (Phthiracarus besuchetianus sp. n., Steganacarus (S.) antennatus Sp. n. and Steganacarus (S.) schweizeri sp. n.) are new to science and 30 new for the Fauna of Switzerland. Some new or additional morphological data as well as some notes on the taxonomy and distribution of this group are given.