HABITS, 



103 



tomed station for a new siesta. A similar habit 



has been observed by Riley in 



the young caterpillar of the 



Goat weed butterfly, which in 



after-life lives in a nest formed 



of a single leaf [see Fig. 97], 



somewhat resembling, on a 



large scale, the hibernaculum of 



the Viceroy ; it " invariably 



commences feeding at the tip of 



a leaf, stripping it down the 



midrib, upon which, between 



meals, it rests exposed" [Fig. 



88]. This is the more remark- 

 able because Riley states that 



several eggs are sometimes laid 

 upon a single leaf ; 

 in such a case, the 

 caterpillars must disperse on hatch- 

 ing, as even two could scarcely 

 follow this mode of life very con- 

 veniently upon the same leaf. The 

 caterpillar of the Viceroy signifies 

 its displeasure at any disturbance 

 by tossing the head upward, scrap- 

 ing its jaws at the same time upon 

 the leaf ; when moving about, it 

 walks with a palsied shake of the 



whole body which is ludicrous to see. It remains 



FIG. 87. Leaf of wil- 

 low eaten by the cater- 

 pillar of Basilarchia 

 Archippus, showing its 

 habit of leaving a little 

 lump of debris attached 

 by silk to the midrib ; 

 nat. size (Riley). 



FIG. 88. Young 

 caterpillar of 

 Anaea Andria, 

 seated on the ex- 

 tremity of the 

 stripped midrib 

 of a leaf of goat- 

 weed. ; nat. size 

 (Riley). 



