THE ENTOMOLOGIST, 267 
deviate more or less from a strictly spherical contour. These 
galls are not very hard; they are smooth, and of a green 
colour, but become dingy yellowish brown towards autumn. 
When of normal form each gall has a small pseudo-stigma 
[ombilic] exactly opposite the point of attachment at the 
base: similar processes, however, frequently make their 
appearance on other parts of the surface; and again some- 
times they are entirely absent. In section these galls, when 
recent, exhibit a layer of green bark, which subsequently 
becomes hard and brown. ‘The interior consists of a spongy 
parenchyma, which, in recent specimens, exhibits a greater or 
smaller number of green spots. The inner gall is situated 
under the pseudo-stigma [ombilic], when this exists, and is 
closely adherent to its surroundings. The perfect insect 
generally emerges in November. In many cases the galls of 
Cynips conglomerata may be mistaken for those of C. Ligni- 
cola, but are always to be distinguished by their green 
colour until late in the autumn, when they become of a 
somewhat yellowish brown tint: the frequent presence of the 
pseudo-stigma, the two different kinds of reticulation in the 
interior, and in many instances the position of the inner 
gall close to the pseudo-stigma, serve to distinguish it from 
that of C. Lignicola. This gall is sometimes so abundant 
that the young crippled shoots of the oak-bushes are thickly 
sprinkled with them.—G. L. Mayr. 
Life-histories of Sawflies. ‘Translated from the Dutch of 
M.S. C. SNELLEN VAN VOLLENHOVEN by J. W. May, Esq. 
(Continued from p. 255.) 
SELANDRIA ANNULIPES, Klug. 
Imago: Klug, die Blattwespen nach ihren Gattungen und 
Arten in Der Gesellsch. Naturf. Freunde zu Berlin 
Magazin, &c., 8er Jahrg. p. 70, No. 49; Hartig, Blatt- 
und Holzwespen, p. 279, No. 46. 
Larva: Ratzeburg, Die Forstinsecten, Th. iii. p. 180, No. 39; 
Patan. f 7. F 
