CATALOGUE OF BRITISH PLANT-GALLS 175 
Hymen- 
optera 
J 5 
Diptera 
Hymen- 
optern 
Diptera 
Minute ovoid galls in dormant adventitious buds. See 
No. 255. 
Dryophanta Taschenbergi Schl. 287 
Ormerod, 1877, pp. 42, 43. 
Acorn containing numerous larval cells. See No. 274. 
Callirhytis GLANDIUM Giraud 288 
Connold, Oak Galls, pi. 8. Houard, No. 1809. 
Castanea sativa Mill. Sweet Chestnut. 
Minute rounded pustule on the leaf, about 1 mm. in 
diameter, slightly raised on both surfaces, and of much 
brighter green than the surrounding normal tissue. 
Cecidomyia sp. 289 
C. Zimmermann, 1907. Houard, No. 1167. 
Fagus sylvatica Linn. 67. Beech. 
On the roots, solitary or coalescent, yellowish or reddish- 
brown tumours, varying in size from a pea to a cherry. 
See No. 239. 
Biorrhiza aptera Bose. 290 
Connold, Plant Galls, p. 137. 
On the midrib or on the adjacent part of a lateral vein, 
on the upper surface of the leaf. A glabrous gall of woody 
consistency, ovoid but pointed, 8 to 10 mm. high, 5 mm. 
in diameter, with thick green walls. Green or tinted with 
red. On the lower surface of the leaf the gall is indicated 
by a slight rounded swelling with a minute central open¬ 
ing guarded by a fringe of hairs. Unilocular, larva white. 
M. E. Gall falls away at maturity. 
Mikiola fagi Hartig 291 
Syn. Hormomyia fagi Hartig. 
Connold, Veg. Galls, pi. 96; Plant Galls, fig. 51, his 
galls appear to be those of Oligotrophus annulipes. He 
describes them as being only 4 mm. in girth. Houard, 
No. 1151 (he does not allude to Connold’s plate). 
On the midrib or a lateral vein on the upper surface of 
the leaf. Gall soft, hairy, ovoid, bluntly pointed, 1 to 2 
mm. in diameter, walls thin and fragile, covered with 
uhite or brown hairs. Unilocular, becoming detached at 
maturity, leaving a circular scar on the leaf. Larva white. 
M. E. (Plate IX. 1.) 
Oligotrophus annulipes Hartig 292 
Syn. Hormomyiapiligera F. Low, Hormomyia annulipes 
Hartig. 
Connold, Veg. Galls, pi. 98 ; Plant Galls, fig. 52. 
Houard, No. 1153. 
