Heinrich Greven

A short biography of H. GREVEN (born: Jan I, 1894, Siichteln nr. (Crefeld, German Federal Republic; deceased: Sept. 30, 1978, Viersen nr. Krefeld; schoolmaster and hydrobiologist) is followed by a list of his odonatological publications (1967-1979), all of which are devoted to the local fauna of the Lower Rhine region. On September 30, 1978, Heinrich Greven passed away after a long and utmost active life deeply devoted to teaching as a schoolmaster and as a hydrobiologist. He was one of those non-professional but seriously working local collectors, whose fundamental contributions to our knowledge of the local fauna cannot be honoured adequately.