Collohmannia johnstoni n. sp. (Acari, Oribatida) from West Virginia (U.S.A.), including description of ontogeny, setal variation, notes on biology and systematics of Collohmanniidae
  First record of Collohmannia (C. schusteri n. sp) and Hermannia (H. sellnicki n. sp) from baltic amber, with notes on sellnick’s genera of fossil oribatid mites (Acari: Oribatida)
  The immature stages of two genera of Oribotritiidae (Oribates)
  Collohmannia gigantea Selln. (Oribatei). First part