THE TRICHOPTERA 229 



The Trichoptera are evidently closely related to the Lepidoptera in 

 many ways and are undoubtedly with the last-named order, divergent 

 descendants from common ancestors. Some Lepidoptera so closely resem- 

 ble Trichoptera in fact, that they have been placed in the latter group. 

 They also have many resemblances to the Neuroptera, but their connec- 

 tion with this order is plainly more remote, and sufficient time has elapsed 

 since the divergence of the present Neuroptera and Trichoptera from their 

 common ancestors, to permit the development of many differences. 



