PLATE 8 



FIG." i Summit " balds " east of 



it of Roan Mountain, North Carolina. 



L%^tV:>^.;?. * C \ , - x^-.- J Tf, :v v- ;V*K*vi 



FIG. 2 Protective coloration of Ttimerotropis citrina. Male and female locusts 



on sandy soil marked with raindrop impressions. Tarboro, 



North Carolina. (The rule to show scale.) 



