34S 



TRANSFORMATIONS OF INSECTS. 



stitute the order now under consideration — possess four very- 

 narrow membranous wings, without any folds or network upon 

 them, but furnished and decorated with beautiful fringes upon the 

 edges. These fringes characterise the order, which in other re- 

 spects is closely allied to the Orthoptera, and they give the name 

 to it. The Thysanoptera (dvaavoi, fringes ; Trrepov, a wang) have 

 filiform antennae and very large eyes, and the different species of 

 the genus Thrips have a great diversity of wing fringing. The 

 structure of the wings is somewhat . analogous to that observed 

 in the Lepidoptera, in the PteropJiorina, and the Ahidtina, 



The metamorphoses of the TJiysanoptcra have not received 

 much attention, but they are known to be of the incomplete kind. 

 The quiet chrysalis condition is not observed, and the larvae are 

 born from the ^'gg, greatly resembling the adults. The absence 

 of wings is the great distinction between the larval and the imago 

 state, as it is in the closely-allied order of the Orthoptera. The 

 larva moults several times, and the wings are gradually added, 

 the colour of the insect altering also. 



/.\\A\\ 



