38 
tected in abundance by Dr. White on the same trees as the two 
former, near Aberfeldy, in September. They are also found in 
Germany (Dr. Thomas in Giebel’s Zeitschr, 1869, p. 336), and in 
Austria (Dr. Fr. Loew, in Verh. Z. B. Ges. Wien xxiv., p. 506). 
Dr. Thomas is of opinion that the gall is the same as Amerling’s 
Malotrichus Tilia. 
VICIA SEPIUM L. :— 
a. Galls of Cecidomyia Onobrychidis Bremi (Sc. Jat. ii., 70), 
-omposed of a mass of conduplicate fleshly leaflets, the mass being 
either terminal or axillary. 
b. Galls of Apion Gyllenhallit Schrk., quite similar to those of 
the same insect on V. Cracca L. (Sc. Vat. iv., 169). They form 
swellings on the stem, or branches, or petioles, or peduncles just 
above a node, or above the base of the part affected, if that isa 
lateral member. The gall becomes about twice as thick as the 
normal diameter of the part, but does not otherwise differ much 
from it in appearance. Its walls are thin, and enclose a space in 
which the larva lives. The galls are local, but are not rare in one 
or two places near Aberdeen in August. 
PYRUS AUCUPARIA Gertn :— 
a. Blister or pustule-galls in the leaves, the work of a species 
of mite (Phytoptus), (Sc. WVat., ii., 79); very common in many 
parts of Scotland. 
b. Erineum Sorbi Kunze, also the work of a species of Phy- 
toptus, forms irregular patches on the lower surface of the leaf, 
more or less densely covered with blunt cylindrical or slightly 
clavate hairs, incurved at the tip, pale yellowish when young, but 
passing through yellowish-brown to rusty or dark brown when 
mature. The mites live between the hairs. The patches are 
usually from 3 to 12 mm. across. Greville records this Erineum 
rom Kinnordy and elsewhere (Sc. Crypt. Flora,” ¢. 263, f. 1). 
I have found it on Deeside from Banchory to Ballater, and Dr. 
White has met with it in Perthshire. Both the Z7czeuwm and the 
blister galls often may be found on the same leaflet, but usually 
they occur apart. 
PYRUS MALUS L., ACERBA D.C. (Crab-apple) :— 
Erineum pyrinum Pers., like the last the work of a species of 
Phytoptus, forms irregular patches on both surfaces of the leaves, 
but most abundantly on the lower surface. Often the patches 
coalesce so as to extend along the nerves, or even to cover almost 
the entire surface. They have a velvety aspect, due to consisting 
