APHILOTHRIX FECUNDATRIX. 83 
English names of gall.—‘ The Artichoke Gall,” “The Hop- 
strobile Gall,” ‘The Hop Gall,” «The Larch-cone Gall.” 
Position of gall.—In axillary and terminal buds. 
Manner of growth, —Single, sessile, aciniform, concealed. 
Colours.—Green, dark green, reddish-brown. 
Average dimensions of a mature specimen. -— Height, 
8mm.; breadth, 4 mm.; girth, 12 mm. 
May be sought during the months of June to September. 
Growth is complete by the end of August. 
The typical condition of the gall is unilocular and unilarval. 
The larva pupates in the gall. The imago emerges during the 
following spring. Sometimes not until two or three years afterwards. 
Parasites, Nos. 11, 30, 47, 56, 59, 66, 116, 118. Inquilines, 
Nos. 128, 182, 145. 
Alternate sexual generation: Andricus pilosus, Adler. 
This gall was observed in England by Dr. Sir 
Thomas Browne, and mentioned by him in correspon- 
dence with Dr. Merrett in 1668 (see Introduction). 
The branch shown on Plate XX has thirteen 
strobiles growing on it, and it may be considered a 
very fine and unusual example of so numerous an 
ageregation. 
This growth consists of two parts totally distinct 
from each other in appearance, shape, size, structure, 
manner of growth, and colour; the outer and easily 
recognisable portion, composed of a large number 
of imbricated leaf-scales; the inner and invisible 
part, a small pip-like, glossy, more or less hard, 
substance. 
The leaf-scales are of two shapes. Those occupying 
a central position are long, narrow, and thread-lke, 
usually about ninety in number, and thickly covered 
with long silky hairs. The external or enveloping 
leaf-scales are not so numerous, oval or somewhat 
triangular in outline, of varying shades of green, 
mostly margined with a deeper shade of the same 
colour, or with pink or purple, and these scales also 
are thickly covered, but on the external surface only, 
with long silky adpressed hairs, many more of which 
spring from the margins and produce a delicate fringe. 
