xl Introduction. 



Andrictis curvator, live as long as those leaves of which 

 the}' form part. Aphilotrix fecundatrix and Cynips 

 Kollari die at the end of the first summer ; Dryophanta 

 longiveiitris, Aphilotrix collar is, A.globtdi, A. autumnalis, 

 and Neuroierits ostreus, perish during the first winter ; 

 the spangle-galls and Biorhiza renuni live till spring ; 

 Aphilotrix radicis, A. Sicboldi, and Biorhiza aptera do 

 not die till the second winter ; while Andrictis inflator 

 may almost be termed perennial, since new oak-buds 

 are developed upon it in the following year. 



