New species of Euzercon Berlese from Mexico with a key to the New-World species (Acarina, Mesostigmata, Euzerconidae)
  The genus Antennurella Berlese and descriptions of two new species of Similantennurella gen. nov. (Acarina, Trigynaspida, Klinckowstroemiidae)
  The genus Klinckowstroemia Tragardh and descriptions of nine new species (Acarina, Trigynaspida, Klinckowstroemiidae)
  The family Klinckowstroemiidae Tragardh with descriptions of two new species of Klinckowstroemiella (Acarina, Mesostigmata, Trigynaspida)