No. 406.] GALL OF THE MONTEREY PINE. 803 
were laid, which might in this case, as in others, stimulate the 
plant tissues to abnormal growth and thus bring about the gall. 
The cells, however, adjacent to the masses of eggs did not show 
the slightest discoloration or shrinkage of contents, nor did 
they in any other way that could be discovered indicate that 
substances were deposited which might stimulate or affect the 
plant tissues. All of the eggs which were placed on the out- 
side of the young shoots disappeared on the first of March. A 
closer examination of the leaf bundles showed that, in addition 
to the great numbers of eggs placed on their surfaces, the 
Fic. 1.— A, young shoot with leaf fascicles (//) and primary leaves (Jj). x2. B, dorsal view of a 
m qd or £27. at AS cpi QM M M E of eggs between the two. 
e iV + } J La wl , =i P 
X circa 10. C,t tion of the same with the protecting scales. X circa 16. 
fly also placed some inside of them. The eggs which were 
deposited within the leaf fascicles were in much smaller masses 
than those on the outside. The number of eggs in these 
masses did not, in any case observed, exceed six. They 
were found in three positions. Some eggs were between the 
enwrapping scales, others inside of them but near the tips of 
the leaves, and still others within and at the bases of the inner 
scales (Fig. 2, A, B). These different positions of the eggs 
might not all be met with in any one bundle, but they were 
of frequent occurrence. In those cases where the eggs were 
placed between the scales, and also where they were deposited 
