THE CATERPILLAR. 



significant foreshadowing of the approacJting 

 winged state of the insect. 

 One more feature common to several segments of 



FIG. 26. PontiaProtodice ; a, caterpillar ; 6, chrysalis ; nat. size (Biley). 



the body of a caterpillar is its abundant armature. 

 No caterpillars of butterflies are absolutely naked; 

 those which appear so are still clothed with delicate 

 pile [Fig. 26], or short distant bristles, which are 

 more or less regularly disposed ; others are cov- 

 ered with simple or compound spines [Fig. 27], or 

 with microscopically 

 barbed hairs of great 

 length, or with fleshy 

 filaments [Fig. 28 ; 

 see also Fig. 22], or 



Clubbed Or knobby FIG. 27.-Caterpil!arofPapilioAntiopa, 



tubercles [Fig. 29; see 



also Figs. 40, a, &, c], whose definite arrangement is 

 still more apparent ; ordinarily they are disposed 

 in longitudinal rows, with one or more spines on 



