BUTTERFLY AND OTHER SCALY-WINGED INSECTS. 117 



The " tongue" is the only means by which the butterfly can 

 obtain food. It sips or sucks up the nectar at the bottom 



C 



FIG. 136. Papiliu Turniia. A, egg (magnified); B, caterpillar; C, the same just 

 before pupating; D, pupa or chrysalis. (Natural size.) 



of flowers, or drinks water, imbibing it through this tube. 

 It never uses its jaws; and, in fact, it cannot, because they 



