51 
the pedicels are given off, or they may be swollen flower-buds ; the 
texture is fleshy. They are probably the work of Cecidomyia 
floricola Rudow, (VI, 255). 
ACER PSEUDO-PLATANUS L.:— 
Besides the mite-galls known as Ceratoneon vulgare, described 
in the former paper, an Zrineum (L. acerinum D. C.), is found in 
scattered patches of a dark rusty brown all over the lower surface 
of the leaf. These patches are, at first, pale yellowish-white, but 
soon change colour. They usually do not exceed 5 to 12 mm. 
across ; but at times they coalesce, so that the whole lower surface 
‘may be almost entirely covered with the elongated clubbed and 
twisted hairs. These patches are common in Scotland. (¥, 2r4). 
PRUNUS AVIUM L.:— 
A pseudo-gall is formed at the tips of the young branches by the’ 
attacks of one of the Aphides (AZyzus Cerasi), the leaves being so 
_ altered as to become fleshy, and to curl up, thereby forming 
spaces for the protection of the insects. These pseudo-galls are 
found near Aberdeen in spring and early summer. (V., 275). 
PRUNUS PADUS L.:— 
On this plant, in addition to the well known “nail-galls,” 
_ described previously, one finds in many parts of Scotland, chiefly 
ce in autumn, patches of the mite-gall, Zvineum Padi Grev. (EZ. 
_ padinum Duv.). This gall is much like Z. acerinum just described, 
but the patches are usually less regular in outline, and the hairs are 
. of a different form, being straight, clavate, and warty over the club. 
‘The patches vary with age from pale yellowish brown to deep rusty 
brown. (VZ, 76-77. 
_ RIBES RUBRUM L., and R. NIGRUM L.:— 
_ Present pseudo-galls, the result of attacks of a species of Aphis 
_ (Rhopalosiphum Ribis Buckton), the leaves becoming distorted and 
_ ted, and enclosing irregular cavities below, in which the insects 
live sheltered. They are common near Aberdeen, and probably 
almost throughout the country. (VV, 275). 
The buds of R. NIGRUM are also attacked by mites in 
_ Stirlingshire, as recorded in the Transactions of the local Nat. 
_ Hist. Soc.; and I have been told that the bushes are considerably 
_ destroyed in some places near Aberdeen ; but the galls have not yet 
‘ b fallen under my own observation. The buds reach a size twice or 
_ thrice as large as in their healthy condition, but do not open; and 
a _ the bushes languish or even die from the injuries sustained. 
_ LONICERA PERICLYMENUM L.:— 
The edges of the leaves are attacked by gall-mites, in conse- 
