ur 
As the buds grow larger and more swollen, the modified leaves 
increase in number and size, and assume the shape of either 
horn-like processes or partly expanded leaves (pl. XXV, fig. 3). 
Within the gall there is now found a deep excavation containing 
a larva of the 2nd stage (pl. XXV, fig. 4) together with a single 
exuvia. 
Further developed galls (pl. XXV, fig. 5) have each a widened 
disc-like summit and a central hollow. The periphery of the disc is 
provided with two rows of more or less modified leaves or of finger- 
like processes formed of the same. The leaves forming the inner 
row are about eleven in number and finger-like in shape, while 
those of the outer row retain the shape of leaves more or less. The 
finger-like leaves of the inner row lie on the surface of the disc 
with their free ends directed inwards, so that they all meet at the 
centre of the disc. 
If we cut open the galls at the level of the insertion of the 
finger-like leaves, there may be found a hollow disc, whose peri- 
phery is marked with several depressions, each occupying the base 
of the corresponding finger-like leaves. In the cavity of the disc 
there is always found a single wingless viviparous female (pl. XXV, 
fig. 6) with two exuviæ, and a number of larva laid by it. Each of 
these larva (pl. XXV, fig. 7) usually rests in the depression of a 
finger-like leaf, from which they derive nourishment. 
By the beginning of June, the galls have become more developed, 
having assumed a depressed oval or round form, and their stalk is 
strongly compressed and marked with some longitudinal streaks. 
The finger-like leaves or processes growing on the periphery of 
the central disc are now more swollen than before, and have their 
ends directed towards the center of the disc, where they all meet 
together just as in the buds of Chysanthemum flowers (pl. XXVI, 
fig. 16). Outside the circle of these processes, there lies another 
circle of slender horn-like processes, as well as the deformed leaves. 
The central cavity of the disc becomes wider and deeper than in 
the previous stage. 
