337 
ADDITIONAL YORKSHIRE GALLS. 
S. L. MOSLEY, F.E:S., 
Beaumont Park Museum, Huddersfield; Author of * British Birds, Nests, and Eggs, etc. 
SINCE my last account of Yorkshire Galls (p. 273), I have been 
favoured by Mr. Peter Inchbald, F.L.S., with a number of records, 
from which, together with my own observations, and odd galls sent 
in from other quarters, I am able to compile the following additional 
list :— 
On Acer campestre. Maple. 
Petiole swollen, containing the larva of a Cecidomyia. In a 
quarry on the road-side between Womersley and Knottingley, 
Aug. Ist, 1892. I only obtained a few galls, and did not 
rear the flies. 
On Achillea millefolium. Yarro 
Clusters of galls at base of stem nes to ground. Caused by 
a two-winged fly (Carphotricha guittularis). Recorded by 
Mr. Inchbald, from Storthes Hall. I have also found it at 
Lepton. 
On Achillea ptarmica. Sneezewort. 
Contorted florets. Caused by a midge (Cecidomyia plarmice). 
Recorded from Storthes Hall by Mr. Inchbald. 
On Ammophila arenaria. Marram grass. 
Mr. Inchbald says ‘ Mematus forms knots in stem. Spurn. 
The only gall known to me on Ammofhila is the large 
imbricate one said to be caused by a chalcid (Zurytoma 
hyalipennis). 
On Betula alba. Birch. 
Seed-cases in female catkins swollen. Caused by a gnat 
(Cecidomyia betule). Recorded from Storthes Hall by 
r. Inchbald. 
On Cardamine pratensis and C. amara. Cuckoo Flower 
and Bitter Cress. 
Calyx swollen. Caused by a gnat (Cecidomyia cardamines). 
‘ een in mpeniance from each ae Storthes Hall. P. I.’ 
oo ge, ae foc ak in my previous paper should be a pseudo- 
Platanus. J have not yet found the similar gall on Acer campestre in Yorkshire. 
Noy. 1892. 
