589 



Krausse (A.). Forstentomologische Exkursionen ins Eggegebirge 

 zum Studium der Massenvermehrung der Cephaleia abietis, L. 

 [Excursions of a Forest Entomologist in the Egge Mountains for 

 the Study of a heavy Infestation of C. abietis. \— Arch. 

 Naturgesch., Ixxxiii (1917), Abt. A, no. 6, 1919, pp. 46-49. 

 (Abstract in Zeitschr. Pflanzenkr., Stiittmrt, xxxi, no. 1-2, 1921. 

 p. 70.) 



The spruce sawfly, Cephaleia abietis, L., was very abundant in 1917- 

 1918 in the Egge Mountains in WestphaHa, occurring together with 

 C. arvensis, Panz. In 1917 upwards of 600 larvae occurred per 10 

 sq. ft. The edges of the stands, which were much extended as a result 

 of clear felling, were the parts most infested. In general there was no 

 complete defohation, so that the spruces recovered. About 20 per 

 cent, of the larvae harboured parasites, of which Xenoschesis fulvipes, 

 Grav., and Homaspis narrator, Grav., were the commonest. Numerous 

 adults were captured by a spider, Linyphia phrygiana. Banding has 

 not proved a suitable measure. 



Herrmann (L.). Kalk als Mittel gegen Drahtwiirmer. [Lime against 

 Wireworms.] — Die Umschau, xxiii, 1919, p. 604. (Abstract in 

 Zeitschr. Pflanzenkr., Stuttgart, xxxi, no. 1-2, 1921, p. 77.) 



Unslaked lime worked into the soil is recommended against wire- 

 worms, which are killed when the lime is slaked by rain. 



Krausse (A.). Entomologische Mitteilungen Nr. 10. Die Arten, 

 Rassen und Varietaten der " Waldgartner." (Genus Blastophagns, 

 Eichoff 1864.) [Entomological Communications, No. 10. The 

 Species, Races and Varieties of Myelophilus [Blastophagns) spp.] 

 — Zeitschr. Forst- u. Jagdu'esen, lii, 1920, pp. 168-177. 



WoLLF (— ). Entomologische Mitteilungen Nr. 11. Aufforderung 

 zur Mitarbeit an der Erforsehung der Biologic des grossen und 

 kleinen Waldgartners. [An Appeal for Collaboration in the 

 Biological Study of Myelophilus i Blastophagns) piniperda and 

 M. minor.]— -Ibidem, pp. 227-247. (Abstracted in Zeitschr. 

 Pflanzenkr., Stuttgart, xxxi, no. 1-2, 1921, pp. 77-78.) 



The contents of the first paper are indicated by its title. 



In the second paper a number of points are mentioned as requiring 

 study. The natural enemies of the immature stages of Myelophiliis 

 [Blastophagns) minor are much less destructive than those o"f M. [B.) 

 piniperda. A new mite, Calvolia sp., infests B. piniperda and also 

 Ips [Orthotomicus) laricis. M. minor has no Clerid enemy, Clerus 

 formicarius only attacking M. piniperda. 



Carphoborus minimus, F., may do considerable damage to the 

 crowns of trees, and autumn storms bring down the branches perforated 

 with the mines of this beetle. 



Werth (E.). Phanologie und Pflanzensehutz. [Phenology and 

 Plant Protection.] — Zeitschr. Pflanzenkr., Stuttgart, xxxi, no. 3-4 

 g; 1921, pp. 81-89. 



The term phenology is here used for the observation of the annual 

 developmental phases of plants and animals. The necessity for a 



