442 



moth [Liparis monacha], have therefore had an abundance of other 

 insect food, and this pest has been able to increase at altitudes below 

 2,300 ft. Above this level hibernation always occurs. 



Ext (W.). Beitrage zur Kenntnis des Rapsglanzkafers, Meligethes 

 aeneus, Fabr. [Contributions to a Knowledge of the Rape 

 Beetle, M. aeneus.] — Arch. f. Naturgeschichte, Ixxxvi, 1920, 

 Abt. A, no. 9, 36 figs., 1 plate. (Abstract in Zeitschr. Pfianzenkr. 

 u. Gallenkunde, Stuttgart, xxxii, no. 1-2, 1922, p. 75.) 



This is a morphological and systematic study of Meligethes aeneus, F., 

 to which more attention is being paid in view of the increase in rape 

 cultivation in Germany. 



BoRNER (C.) & Blunck (H.). Zui Kenntnis des Kartoffelerdflohs. 



[On the Potato Flea-beetle.] — Der Kartoffelbau, iii, no. 16, 1919. 

 (Abstract in Zeitschr. Pfianzenkr. u. Gallenktmde, Stuttgart,. 

 xxxii, no. 1-2, 1922, p. 76.) 



A description of Psylliodes affinis and of its biology is given. 



Sal MEN (J.). Eine gegen die Blutlaus unempfindliche Apfelsorte. 



[A Variety of Apple immune to the Woolly Aphis.] — Wiener 

 landiej. Ztg., Ixi, 1921, p. 269. (Abstract in Zeitschr. Pfianzenkr. 

 u. Gallenkunde, Stuttgart, xxxii, no. 1-2, 1922, p. 81.) 



The Zuccalmaglio-Reinette is a variety of apple that is immune 

 to the woolly aphis [Eriosoma lanigertim]. This character is most 

 noticeable in grafted trees, the bark below the graft being infested, 

 while the grafted portion is quite free. 



Gardner (M. W.) & Kendrick (J. B.). Overwintering of Tomato 

 Mosaic. — Bot. Gaz., Chicago, III., Ixxiii, no. 6, June 1922, 

 pp. 469-485, 1 plate. 



Mosaic disease has been found in the field in Indiana on Physalis 

 subglabrata, P. virginiana, P. heterophylla and Solanum carolinense, 

 and has been transmitted to tomato from each of these perennial 

 weeds. The virus persists in the rootstocks of P. subglabrata through- 

 out the winter, and diseased shoots appear in the spring before 

 tomatos are planted out in the field. The virus persists year after 

 year in these weeds, but does not occur spontaneously ; it only 

 appears on Physalis in or near fields once used for tomatos. 



Preliminary tests indicate the possibility of transmission by Aphids 

 and flea-beetles. To prevent the occurrence of the disease, all 

 perennial Solanaceous weeds in and near tomato fields, and especially 

 the plant beds, should be destroyed early in the season. 



Zacher (F.). Die Feinde der Syringen. [The Enemies of Lilac] — 

 Reprint from Die Gartenwelt, Berlin, xxvi, no. 21, 1922, 4 pp., 

 4 figs. 



Of the more important pests of lilac, Gracilaria syringella, F., does 

 the most noticeable injury, the second generation being the more 

 harmful. The moth emerges in May from the pupae that have hiber- 

 nated in the ground and oviposits on the developing leaves. The larvae 

 are gregarious and cause large, blister-like mines that curl irregularly.. 



