ve 
ST 
I have met with them on Cerastium near Bergen, in Norway, and 
in the Brenner Pass in the Tyrol; in this, latter locality I have 
seen the galls on the Sve//laria also. The insects are described 
and figured in Buckton’s “ British Aphides” (vol. ii., p. 147, ¢. 
Ixxxy., figs. 1, 2, and 3). They are usually numerous in each 
gall, between the leaves. I have seen them only in the apterous 
state. 
STELLARIA GRAMINEA L.—Some clumps of this plant 
near Fortingall, in Perthshire, were found in the month of 
September 1882, much attacked by mites (Phytoptus). Almost 
every shoot was affected ; the leaves on the apical part and the 
bracts on the flower-shoots becoming conduplicate, slightly swollen 
and fleshy, with a yellowish tinge in the green colour as compared 
with the normal condition. Each leaf becomes somewhat sickle- 
shaped with the mid-rib along the convex edge, or spirally twisted 
once or twice. The outer (z.e., lower) epiderm is little if at all 
altered in structure, nor are the middle cells of the leaf much 
changed; but the cells of the inner epiderm become less marked 
from those of the mesophyll, nor are hairs developed on them. 
The mites are numerous in the folded leaves. Similar galls on 
S. glauca have been described by Dr. Thomas from Brandenburg, 
in Germany (Giebel’s Zeitschr, 1877, p. 362). 
TILIA EUROPAEA L., GRANDIFOLIA Ehrh. :— 
a. Nailgalls of a mite (Phytoptus), the galls being named 
Ceratoneon extensum Bremi (Sc. lVat., vol. iv., ~. 203), sent me 
from Dunkeld by Dr. White; abundant in autumn 1882 on some 
trees between Aberfeldy and Kenmore, in Perthshire. 
b. Lrineum tiliaceum Pers. (Sc. Nat., vol. v., p. 204), white hairy 
patches on back of leaf; the makers (PAyfoptus) live among the 
hairs. 
¢. ? Erineum bifrons Lepell. S. Farg. of Fee’s “ Memotre sur les 
Phylerites,” p. 41, no. 32, is the work of a species of Phytoptus. 
The galls are situated in the axils of the larger nerves of the leaf 
frequently in pairs along the mid-rib, or singly along the large lateral 
nerve, where these emit branches outwards. As many as 30 or 
40 may be seen on one leaf, but usually they are less numerous. 
They form rounded hard knobs above, 2 or 3 mm. in diam., and 
covered with a close coat of short pale brown unicellular simple 
hairs. On the lower surface there stands a dense tuft of similar 
hairs ; and on separating these one finds an opening between 
them, leading into a hollow, from the interior of which the hairs 
arise. The mites live between the hairs. These galls were de- 
