392 Fig-Insects and C aerification. 



Explanation of Plate XVIII. 



Fig. 1. Idamella Caricce, female, magnified. 

 1 a. Mandibles of ditto. 

 1 b. Antenna of ditto. 



1 c. Abdomen and ovipositor of ditto, seen laterally. 

 1 d. Terminal segment apart. 

 1 e. Bipartite sheath of ovipositor of ditto. 

 1/. Terminal segment, as seen in situ. 

 1 g. Ditto, in another position. 



1 h. Ditto, seen transparently. 



2 a. Antenna of Idamella aterrima, female. 



2 b. Abdomen and ovipositor of ditto, seen transparently. 

 2 c. Anterior portion of fore wing of ditto. 



