94 



THE ANIMALS AND MAN 



eat the leaves of only certain few kinds of plants. Indoors 

 the live caterpillars should be kept in clean cages (see 

 Appendix II for directions for making cages) and given 

 plenty of fresh food. They will then eat, grow, moult, 

 pupate and finally turn into perfect moth or butterfly. 

 The observations to be made on the caterpillars are of 



Fig. 39. Larva of the violet-tipped butterfly, Polygonia interrogaiionis, 

 pupating. (Slightly enlarged; photograph from life by the author.) 



two general categories: (i) observations of structure; (2) 

 observations of behavior. To record the first make drawings; 

 for the second make notes. 



Of structural characteristics note the segmental make-up 

 of the body and number of the segments; number, position 

 and character of the legs, the mouth-parts, eyes and antennae 

 on head; presence and arrangement of hairs or tubercles, 

 and position and number of spiracles (breathing pores). 



