Observations en microscopie electronique a balayage 1 sur la famille des spinturnicidae (acarina, mesostigmata) 2 1. Morphologie generale. -The structure and more ultrastructure of Spinturnicidae are little know, this study is the first important approach with scanning of the morphology of this family. These first results regard ultrastructure in four genus: Eyndhovenia, Paraperiglischrus, Periglischrus and Spinturnix, to the exclusion of tarsal organ and gnathosoma which shall study in near publications. The possibility of this technic are many: in first in the definitive knowledge of the structure of this mites, then show up new systematic features for a revision of the family and approach the allow to study sensory organs and behaviour of Spinturnicidae.