i54 BRITISH GALLS 
opens by a slit on the inferior surface. Larva solitary, 
yellowish. M. E. 
Harmandia TREMULAR Winn. 1 75 
Conno'd, Plant Galls, fig. 41. Swanton, Knowledge, 
June, 1910. Houard, No. 506. 
Acari Leaves very small, crinkled and thickened, yellow or 
red, often rolled upwards on one or both margins. 
Eriophyes dispar Nalepa 176 
Houard, No. 486. 
Small, irregularly rounded, red pustules on the glands 
at the base of the leaf near the petiole. 
Eriophyes diversipunctatus Nal. 177 
Connold, Plant Galls, p. 24a. Houard, No. 499. 
,, A swelling on the upper surface (usually) of the leaf, 
with a corresponding concavity below, the latter lined with 
numerous projections. Whitish at first, then brown. 
Phyllocoptes populi Nalepa 178 
Erineum fiofiulinum Persoon. 
Greville, 1827, pi. 250. Houard, No. 514. 
Fungi Convex golden-yellow blisters on the leaf. See No. 164. 
Taphrina aurea Fries. 179 
Connold, Plant Galls, p. 200. 
„ Carpels becoming much swollen, and assuming a bright 
golden colour. 
Taphrina johansonii Sadebeck 180 
Massee, Textbook Plant Diseases, p. 92. 
Coleop- 
tera 
Populus nigra Linn. Black Poplar. 
Fusiform or rounded swellings on the young branches. 
See No. 161. 
Saperda POPULNEA Linn. 181 
Houard, No. 526. 
Lepidop- Young branches swollen above. See No. 163. 
tera Gypsonoma ackriana Dup. 182 
Houard, No. 530. 
Knotty swellings on branches of the first and second 
years’ growth. 
SCIAPTERON TABANIFORME Rott. I S3 
Houard, No. 527. 
Homop- Leaf margins bent downwards, with blisters on the 
tera under side and black patches on the upper. Aphis pale 
brownish-green, very hairy; eyes bright red. Larvae 
various shades of green. 
Chaitophorus leucomelas Koch 184 
Buckton, ii., 136. Houard, No. 54 icl 
