52 
quence of which they become furrowed quite close to the edge 
usually, though occasionally as much as 5 mm. from the edge 
The furrow is open above, and is wavy in outline, and in it the- 
mites live. The gall is very inconspicuous; but is abundant on 
the plants infested with it. I have found it only at Cawdor near 
Forres, but it will be found, beyond doubt, in other parts: of 
Scotland when looked for. (V., 275). 
ARTEMISIA ABROTANUM L., Southernwood :—- 
On a shrub of this species, in a garden in Old Aberdeen, I 
found, in October 1884, the younger leaves bearing numerous 
small galls. Each gall is nearly cylindrical, attached by the base 
and by one side to the surface of the leaf, and ending in a conical 
free tip above. The free wall is very thin. The surface is like 
that of the leaf, but the gall is slightly yellowish or dull reddish 
green. ‘The central cavity is occupied by an orange red larva ofa 
Ceacidomyia (sp. ?) The galls are usually situated near the origin 
of the chief lobes of the leaf. I have not been able to find any 
gall recorded for the above plant. 
TANACETUM VULGARE L.:— 
Has the edges of the lobes of its leaves rolled by mites into 
narrow tubes, either in spots, or, in the young leaves, in almost 
their whole length. The galled parts become covered with silky 
white hairs, so that they are rather conspicuous. Dr. White has 
sent me the galls from Perthshire. (V7Z., 256.) 
CHENOPODIUM ALBUM L., ATRIPLEX PATULA L.,, 
and A. BABINGTONII Woods :— 
All bear pseudo-galls, consisting of pale involute fleshy leaves. 
Protected in these are numerous Aphides (4. Azriplicis L.), in all 
the stages of development. These deformities are very common 
in most places. (VJ, 76.) 
ULMUS MONTANA Sm.:— 
Very commonly bears pseudo-galls of an Aphis, (Schzzoneura 
Ulmi L). They are similar in structure to those of the Aphides 
generally, consisting of a leaf that becomes spirally revolute 
on one side, so as to enclose a space occupied by the Aphides, 
which live in the midst of a white powdery secretion and clear 
drops of fluid. The outer surface becomes yellowish or may 
remain rather green; and the gall is fleshy and rather brittle. 
(V., 276.) 
At Cawdor, near Forres, I found once the galls of another 
species of Aphis (Ze¢raneura Ulmi L.), and in the autumn of 1883 
