39 
of a close growth of short hairs, at first pale, but changing to rusty 
brown. The hairs are from three to five times as long as the leaf 
is thick, simple, usually rather twisted or hooked near the tip, 
blunt, and thin walled. Between them live the mites. Dr. 
White sent me specimens in June, from Dalguise, on the banks of 
the Tay in Perthshire ; and I also met with it near Kenmore in 
September. It is recorded by Greville (le., I, t. 22, Alora Edin., 
p- 449), on P. Malus and on P. communis from Craigie Hill, near 
Edinburgh. Possibly this gall is the work of the same mite as 
causes £. Sordi. 
GALIUM PALUSTRE L:-— 
(a) Galls of Cecid. Galii Winn., consisting of a terminal rosette 
of leaves (Sc. Wat. I, 156). 
(2) Galls of Phytoptus, in form of leaves of the upper whorls 
being convolute along the margins, or from the tip, so as to form 
tubes of a yellowish, reddish, or brownish-green colour, inside 
which the mites live. ‘The appearances presented are very similar, 
though on a smaller scale, to those seen in G. Aparine (Sc. Wat. 
IV, 15, 6), and on G. verum (lc. p. 204, e); and are very pro- 
bably the work of the same species of mite. 
GALIUM SAXATILE L. :— 
I have already (Sc. Jaz. IV., f. 15 and pg. 169), described three 
forms of galls from this plant, viz. :— 
(a) Phytoptus galls like those described from G. palustre ; 
(2) Flowerbuds, or fruits swollen and tenanted by mites 
_ (Phytoptus.) 
(c) Flowerbuds swollen and tenanted by larve of Cecid. Galit 
. Winn. - 
To these I have now to add a fourth gall, very common in 
in Braemar, from about 800 to 3500 feet above the sea level, and 
also in Perthshire at the same elevation. 
(a) This: gall also is the work of a species of Phytoptus, and 
comes nearest to (2), but differs from it in aspect decidedly. The 
flower-buds alone are attacked, but frequently the whole inflor- 
escence is affected, and remains short and stunted, forming a 
rounded mass. Sometimes the gall remains green, though usually 
it becomes reddish brown in colour. Each inflorescence forms 
a mass about 5mm. in diameter. The flowers open, but all their 
parts are slightly fleshy and remain abortive, with no marked 
differences in colour. 
I could not find any trace in Braemar of gall (a), but in autumn 
of 1882 I found them near Aberdeen, and had previously found 
