68 BRITISH OAK GALLS. 
Average dimensions of a mature specimen.— Length, 
2mm.; breadth, 15 mm.; girth, 45 mm. 
May be sought during the months of May and June. 
Growth is complete by the end of May. 
The typical condition of the gall is unilocular and unilarval. 
The larva pupates in the gall. The imago emerges during June. 
Alternate agamic generation: Aphilothrixfecundatriz, Adler. 
This pretty little gall, although very similar in size and 
shape to Andricus nudus, differs from it in being 
thickly covered with whitish hairlets; it is also more 
or less solitary in its manner of growth. 
It is found mostly on Q. pedunculata; ‘the reason 
for A. fecundatriz preferring” (to oviposit in the 
catkins of) “‘ this species of oak is probably because it 
flowers about fourteen days earlier than Q. sessiliflora ” 
(Adler, ‘ Alternating Generations,’ p. 50). 
Andricus ramuli, Linn. 
(Plate XIV.) 
Cynips quercus-ramuli, Linn; Teras amentorwm, Hartig; Andricus 
ramuli, Schenck, Adler, Licht., Mayr, Miller, Fitch; Cynips ramuli, 
Cameron, Marshall, Mosley. 
Haplish names of gall.—‘‘The Woolly Gall,” “The Cotton 
Gall.” 
Position of gall.—On the staminate catkin. 
Manner of growth. —Hirsute, gregarious, conglomerated, oval. 
Colours.—Green, dark green, yellowish-brown. 
Average dimensions of a mature specimen.— Length, 
2mm.; breadth, 1 mm.; girth, 3 mm. 
May be sought during the months of May and June. 
Growth is complete by the end of June. 
The typical condition of the gall is plurilocular, but unilarval. 
Usual number of cells, about twelve. ; 
The larva pupates in the gall. The imago emerges during 
July and August. 
Parasites, Nos. 21, 23, 45, 62, 64, 104, 154. Inquilines, Nos. ° 
17, 130, 136. 
Alternate agamic generation: Aphilothriz autumnalis, Hartig. 
This gall was observed in England by Dr. Sir 
Thomas Browne, and mentioned by him in corres- 
pondence with Dr. Merrett in 1668 (see Introduction). 
