348 



INSECTA. 



having enclosed itself in a silken ball, throws off its last skin, and 

 becomes a quiescent pupa; but while in this state, the position of the 



Fig. 175. 



Fig. 176. 



Metamorphoses of the Silkworm: A, Chrysalis. 



rudiments of the wings and other appendages of the perfect insect 

 is strongly indicated upon the exterior of the chrysalis (A), though 

 these parts are still closely wrapped 

 up in the external covering. 



(910.) The third form of meta- 

 morphosis, called incomplete, is seen 

 in the Hymenoptera, and in many 

 Coleopterous insects. The maggot, 

 in such tribes as exhibit this kind 

 of change, is in some species a 

 simple worm, deprived of feet or 

 other external organs; in others 

 these parts exist in a very imperfect 

 condition: in the pupa, however, 

 the form of the legs and antenna is 

 perfectly distinct, and even the 

 wings may be seen as rudiments 

 projecting from the thorax. This 

 kind of chrysalis we have seen in 

 the Cockchafer (fig. 149, B), in which 



the grub (C) possessed feebly-de- Metamorphoses of the Hive-bee: a, full- 



* grown larva ; 6, pupa ; c, d, e,f, eggs and young, 



velopod legs ; and in the Hive-bee, newly hatched. 



