Une methode simple pour provoquer l eclosion des hypopes pilicoles et endofolliculaires et mettre en evidence les acariens parasites endocutanes. - A simple technique to obtain the hatching of heteromorphic deuthonymphs (hypopi) of mites of the family Glycyphagidae (pilicolous or endofollicular types of hypopi) is described. As this method also induces the active extrusion of the parasitic endocutaneous mites (e. g. Sarcoptidae and Psorergatidae), it might be recommended for the search of this group of mites.