ADDITIONS TO THE LIST OF BRITISH PLANT GALLS. 5 
shire. Where the figure 2 appears it signifies that the gall has 
been found in two localities some distance apart. Otherwise no 
attempt is made to show whether the gall is plentiful or not. 
Some members of the London Natural History Society have 
been collecting records during the past year, and I am indebted 
to two of them—Messrs. 1. B. Bishop and L. J. Tremayne—for 
many interesting specimens. A list of those which are new to 
Britain is appended with the counties from which the galls 
came. 
It is hoped, if sufficient members take up the subject, to 
form another year a specia! section of the Society for the study 
of plant galls, their development and distribution. 
Radicula amphibia, Druce—Dasyneura sisymbriz, Schrank. Mx. 
Lychis diowa, Linn.—Perrisia, sp. Dy. Flower heads enlarged, 
petals undeveloped or aborted. Several white larvee at base of 
etals. 
: Stellaria graminea, Linn.—LEriophyes atrichus, Nal. Dy. 
Hypericum montanum, Linn.—(i) Perrisia hyperict, Bremi. Dy 
(11) P. serotena, Winn. Dy. 
H. elodes, Linn. —Perrisia, sp. Y. Terminal leaves thickened at 
the base, folded over and crinkled, turning brown at the tips. Larve 
yellow, several in each gall. 
Tilia platyphyllos, Scop. — (i) Hriophyes tiie, Pagenst. Dy. 
(ii) H. tuliarvus, Con. Dy. 
T. vulgaris, Hayne.—H. tilie var. exilis, Nal. St. 
T. parvifolia, Khrh.—E#, tilie var. liosoma, Nal. Dy. 
Geranium sanguneum, Linn.—EH. geranw, Can. Y. [I believe 
this gall has been previously recorded by Prof. Trail from the valley 
of the Dee.] 
Medicago lupulina, Linn.—(i) Perrisia, sp. Y. Seeds swollen 
and enlarged, each containing a pale yellow midge larva. (ii)... ? 
St. Elower buds aborted, swollen, coalescing, brown and hairy, 
enclosing a central cavity. 
Trifolium pratense, Linn.—Perrisia, sp. Dy. Leaflets folded 
into a pod resembling the gall caused by P. trzfoliz, but each pod is 
occupied by a white larva. 
T. repens, Linn.—Perrisia, sp. Sy. Leaves thickened and form- 
ing a firm fleshy gall, with aborted buds inside, among which live 
several larvee of a midge. 
Lotus corniculatus, Linn.—Perrisia loticola, Ribs. Dy. 
L. wliginosus, Schkuhr.—Contarinia loti, De Geer. Y., Sy., St. 
Vicia cracca, Linn.—Perrisia vicie, Kieff. Y., Sy., St. 
Lathyrus pratensis, Linn.—Perrisia, sp. Y., Dy., St. 
Prunus spenosa, Linn.—(i) . . Y2. Pillar galls 4-inch high, 
z;-inch diameter, smooth, shining, green, red or crimson in colour, 
rounded at the top, on the upper surface of the leaf, on or near 
midrib. They may be close together and coalescing. Open on under 
side of leaf, where they cause a slight concavity. (il) Perrisza tortriz, 
F. Low. Dev. 2. 
