upon the Leaf of a Plant belonging to the Order Ochnaceæ. 579 
EXPLANATION OF THE FIGURES. 
Tas. XXXIX. A. 
Fig. 1. Under surface of the leaf of an Ochnaceous plant, with the galls of the 
natural size. 
Fig. 2. Portion of the same magnified. aa. Galls. 6. 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. XVIII. 4 G 
