Bui 33. New Series, Div. of Ervtorr.ology U. S. Dept. o' Agr. culture. 



Plate I. 



The Southern Grain Louse <Toxoptera GRAMiNUM'. 



«. Apterous female; h. larva: c, pupa: -'. winged migrant; e, antenna of migrant— all enlarged 



(original |. 



