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. 2o5.) 



Selandria Annulipes, Klug. 



Imago : Klug, die Blattwespcn nach ihren Gattungen und 

 Arten in Der Gesellsch. Naturf. Fieunde zu Berlin 

 Magazin, &c., 8er Jahrg. ]). 70, No. 49; Hartig, Blatl- 

 vnd Holzwespen, p. 279, No. 46. 



Larva : Ratzeburg, Die Forstinsecten, Th. iii. p. 130, No. 39; 

 Taf. iii. f. 7. 



