16 
NATURE STUDY NOTES 
HAEirS-— f he caterpillar remains in its house 
< unno the day-time, feeding on tender leaves and 
shoots at night-time. It can close or open the 
l)i oad end of its “case” by means of silk strands, 
pulled 01 stretched from inside the bag. When 
feeding, the caterpillar crawls about 
dragging its “house” on its back. 
(Cf. the shell-back snail.) It lives 
thus for 18 months. 
CYCLE—The caterpillar changes 
to a “pupa” inside the bag. If the 
moth, which emerges a few days 
latei, is a male insect, it makes a 
hole in the bag and flies away. If 
a female, she lays her eggs in the 
bug and dies in it. Young cater- 
Pillai s ai e hatched from these eggs 
m November, eat their way out" of 
the old case, and make similar 
homes of their own. 
Case Moth’s 
House 
NO 1 ES If a hole is carefully cut m the side 
ol a case in which a caterpillar still exists, it 
will repair the damage the same night, and do it 
so well that it is almost impossible to find the cut 
next day. Often other insects, etc., are found in 
old bags from which the young caterpillars have 
previously escaped. They make warm shelter places 
for two or three years. 
THE WHITE BUTTERFLY 
DESCRIPTION—Large size, white wings, black 
dots near the edges of two wings. (See p. 30.) 
