254 



THE INSECT WORLD. 



caterpillars live in quantities, on apple, pear, and elm trees, and 



destroy the plantations of the promenades of Paris. 



The females of this genus tear off the fur from the extremity of 



their abdomens to make a soft bed 

 for their eggs, and to preserve them 

 from the cold. And yet they are 

 never to see their young, for they die 

 after they have laid their eggs. An- 

 other tribe of Bombycina contains 

 species of a small size, which are 

 remarkable from the habits of theii 

 caterpillars, which make, with foreign 

 bodies, cases, in the interior of which 



they live and undergo their metamorphoses. 



The caterpillars of the genus Psyche live in a case composed of 



Fig. 236. — Llpari.s chrysorrhoea. 



Fig. 237. — Case of Psyche muscella. 



iMf 



Fig. 238. - Psyche muscella. 





Fig. 239. — Case of Psyche rubicolella. 



Fig. 240.— Case of Psyche graminellj 



Fig. 241. — Larva of Psyche graminella. 



^^^0 



Fig. 242. — Psyche graminella. 



fragments of leaves, of bits of grass and straw, of small sticks of 

 wood, or of litde stones, stuck together, and intermixed with silky 

 threads. 



