224 
BRITISH GALLS 
Homop- 
tera 
Diptera 
Homop- 
tera 
Acari 
Hyraen- 
optera 
and are either violet or brown. Sometimes there is 
atrophy, and the seed loses the normal longitudinal ridges 
and points. Larvae yellowish. M. E. 
SCHIZOMYIA PIMPINELLAE F. Low 670 
Syn. Asphondyliapimpinellae F. Low. 
Connold, Veg. Galls, pi. 119; Plant Galls, fig. 84. 
Houard, No. 4529. 
The segments of the leal margins bent inwards and 
turgid, giving rise to a slight swelling on the upper surface. 
Trioza viridula Zett. 671 
Houard, No. 4536. 
CORNACEAE 
Cornus sanguinea Linn. 67. Dogwood. 
Galls in the form of a truncated cone developed chiefly 
on the under s'de of the leaf. The cone is divided into 
two or three lobes at the apex which is on the inferior 
surface. Pale green, becoming purple or reddish. Larvae 
orange-yellow. M. E. Imago, spring, II. (Plate IX. 7.) 
Oligotrophus corni Giraud 672 
Syn. Hormomyia corni Giraud. 
Connold, Plant Galls, fig. 102. Houard, No. 4543. 
ERICACEAE 
Calluna vulgaris Hull. 112. Ling. 
A small tuft of little abnormal branches grouped to¬ 
gether above a slightly swollen part of the stem. 
Mytilaspis pomorum Bouchd 673 
Douglas, 1888, p. 16. Houard, No. 4575. 
Numerous densely fasciated abnormal branches form¬ 
ing a miniature “ witch’s broom.” The leaves are wrinkled 
and covered with whitish hairs. 
Eriophyes callunae 674 
Houard, No. 4574 (without >pecific name). The above 
is a provisional name. 
Vaccinium Vitis-Idaea Linn. 67. Cowberry. 
Galls bean-like, appearing on both sides of the leaf; the 
walls of the larval cavity are at first thick, but become 
very thin by the time the larva is full fed. Dull green at 
first, then brownish. These galls much resemble those of 
Pontania salicis. 
PONTANIA VACCINIELLA Cameron 675 
Syn. Nematus vacciniellus Cameron. 
Cameron, 1876, p. 190. Connold, Plant Galls, p. 100. 
Houard, No. 4573. 
