228 THE SCOLYTID BEETLES. 



GENERA OF DOUBTFUL POSITION. 



Mesoscolytus Blndfd. Styphlosorna Blndfd. 



Phthorophloeus Rey. Acrantus Broun. 



Hyloscyllus Schauff. Inosomus Broun. 



Dendrotrupes Broun. Araptus EicKh. 



