146 THE ENTOMOLOGIST. 
into a club of the same tint; in appearance it resembles 
a blossom-bud, and is from four to seven millemetres in 
diameter, with a spongy interior, the upper extremity being 
conical, and terminating in a point; therefore as these 
conical projections constitute the exterior surface of the 
gall, and as each club radiates, they form altogether a 
spherical or hemispherical gall covered with short cones. 
The individual clubs are so closely fastened together that 
it is impossible to introduce the point of a pin into the 
gall without damaging its structure. When ina fresh green 
state, as I have found it in May, it may be readily detached, 
but the dead gall, when found at midsummer, is so hard and ‘ 
brittle that in attempting to cut or detach it in dry weather 
the clubs are very liable to separate and come off. The gall- 
maker has assumed the perfect state in December, but does 
not emerge and use its wings until the following March.—G. 
L. Mayr. 
Cynips Truncicola.—This spherical gall is found, although 
rarely, on the branches and twigs of 
Fig. 1. Quercus pubescens, and is always 
seated on growing buds. It is about 
the size of a pea, or perhaps a little 
larger; it is of a brownish black 
colour, with a deeply-furrowed surface ; 
between these clefts the inner gall is 
frequently visible. The fissured part, 
covering the inner gall like a layer of 
bark, is remarkable for the somewhat 
symmetrical form which it assumes, 
appearing as equilateral triangles, 
Cynirs Truncrcora. meeting each other at central points: 
Seen above and sideways, on the basal half of the gall this bark- 
and with some magnified foo, Padaninin las 
undersides: ayer is cracked into triangular, square, 
and sometimes almost circular, divi- 
sions. The interior gall is horny and thin; it has a rough, © 
tuberculated surface, and contains one large larva-cell. Both 
my description and figure are made from type specimens, 
which Dr. Giraud had the kindness to send me. He thinks 
it possible that this gall may prove a crippled form of Cynips 
Hartigi.—G. L. Mayr. 
