94 



were practically defoliated, and when this was repeated the following 

 year they succumbed. In many localities, especially in Smaland during 

 1915, 10-20 per cent., and in 1916, 50-90 per cent, of the birches were 

 defoUated. 



The following parasites were bred from the larvae : — HemiteJes sp., 

 Ifoplectis maculator, F., Glypfa sp., Phobocampa sp., Agathis varipes, 

 Th., Ap)anteles (?) sodalis, Hal, Pezomachus instabilis, Forst., Atigitia 

 sp., Apanteles corvinus, Eeinh., A. xanthostigma, Hal., A. 7nesoxanthvs, 

 Ruschka, sp. n., Microdus mediator, Nees, Habrocytus radialis, Th., 

 Dibrachys boucheanus, Eatz., Elasmus viridiceps, Th., Cirrospilus 

 pictus, Nees, Miotropis sulcicrista, Th., Chrysocharis elongaia, Th., and 

 Geniocerus charoba. Walk. 



KJEMNER (N. A.). Stjalkbocken (Phytoecia cylindrica L.) ett skadedjur 

 pa flockblomstrigs vaxter bl, a. pa- morotplantor for froskord. 



[Phytoecia cylindrica L., an Enemy of the Umbellatae, including 

 Seed Carrots.] — Meddelande fran Centralatistalten for Jordbruks- 

 forsok, no. 139 ; Entomologiska Avdelningen, no. 26, 8 pp. 8 fig^. 



In the botanical department of the Agricultural Experiment Station 

 at Stockholm, the Longicorn beetle. Phytoecia cylindrica, did great 

 injury to seed carrots in the autumn of 1915. The stems of the plants 

 were pierced through by the larvae from one or two feet above the 

 ground down to the roots. On lawns in the neighbourhood where 

 Anthriscus silvestris grew in great numbers, about 90 per cent, of this 

 plant was injured in the same way. There is one annual generation, 

 the eggs being laid during the summer and the larva hibernating and 

 completing its metamorphosis in early summer of the following year. 

 The pupae are found in old, dry stalks. The attack not only greatly 

 diminished the crop, but only 30 per cent, of the seed obtained 

 germinated. 



TuLLGEEN (A.). Landtbruksvaxternas fiender och vanner bland de 

 lagre djuren. [The Enemies and Friends of Agricultural Plants 

 amongst the lower Animals.] — Stockholm, 1917, 142 pp., 68 figs. 4 

 coloured plates. 



This is a popular treatise on the agricultural pests of Svreden and 

 their parasites, especially adapted for the use of the agricultural schools. 

 It contains a short introductory chapter dealing with the systematic 

 position of insects, their classification, morphology and develoj)ment, 

 and the different kinds of injury caused by them. In the subsequent 

 chapters the different pests are treated according to their systematic 

 position. The last chapter deals with methods of control and a key 

 arranged according to the different types of injury is appended. 



HoTTA (G.). Cha no shakkakuchu ni kwansuru ch6sa. [Geometrids 

 injurious to the Foliage of Tea.] — Special Report of Tea Plantation 

 Experiments, Prefecture of Shidziioka Agric. Expt. Station, October 

 1917, 21 pp., 3 plates. 



The report contains descriptions of the early stages, habits and life- 

 histories of six species of Geometridae found in Japan injurious to the 

 foHage of tea, viz. : Jankoivskia fuscaria, Leech, Boarmia theae, Mats., 



