upon the Leaf of <i Plant belonging to the Order Ochnaceœ. 579 



EXPLANATION OF THE FIGURES. 

 Tab. XXXIX. A. 



Fig'. 1. Under surface of the leaf of an Oclinaeeous plant, with the galls of the 



natural size. 

 Fig. 2. Portion of tlie same magnified, a a. Galls. !>. Operculum removed. 



c. Gall, cut vertically. 

 Fig. 3. Upper surface of the same leaf, showing the tendency of the galls to 

 protrude through it also. 



VOL. XVII I. 4 G 



