317 



grain was found to protect it from all insect pests without impairing 

 its edible qualities, and fumigation of the granaries with carbon bi- 

 sulphide was successfully carried out. The Noctuid, Agrotis ypsilon, 

 on rabi crops was controlled by Andres-Maire traps, and the Arctiid, 

 Amsacta alhistriga, on millet, was kept in check by hand-picking. 

 Experiments have been made with a view to reviving the silk industry 

 by rearing hybrid silkworms, a cross between the native species that 

 has four or five generation a year, and the Chinese and Japanese 

 species that have only one. These hybrids showed a greater resistance 

 to disease than the native species. 



Ebner (R.). I^e sogenannten " japanischen " Heuschrecken unserer 



Gewachshauser {Diestramniena-Tachycines). [The so-called \ 

 Japanese Grasshoppers of our Greenhouses.] — Centralbl. Bold., 

 Parasit. u. Infektionskr., Jena, lite. Abt., xlv, no. 18-25, 19th 

 June 1916, pp. 587-594. [Received 20th May 1917.] 



The greenhouse pest imported from Japan, and known as Diestram- 

 mena marmorafu, de Haan [see this Revieiv, Ser. A, v, p. 98], has also 

 been called D. unicolor, Br. In 1913 Boldirev identified examples 

 from central Germany with Tachycincs asynamorus, which was 

 described by Adelung in 1902 from greenhouses in Petrograd. In 

 1914 both Chopard and Burr identified examples examined by them 

 as belonging to this genus and the author has found that examples 

 from Vienna were T. asynamorus. To facilitate accurate identification 

 a key is here given to the genera, Diestrammena, Br., Tachycines, Adel., 

 Dolicho-poda, Bol., and Troglophilus, Krauss. As regards injury, the 

 view is expressed that these Orthoptera are not so harmless as 

 formerly believed and that they feed on plants in the absence of 

 animal food. 



Kraus (R.). Zur Frage der Bekampfung der Heuschrecken mittels \ / 

 des Coccobacillics acridiorum, D'Herelle. [The Control of Locusts '^ 

 by means of Coccobacillus acridiorum, d Herelle.] CentralU. 

 Bakt., Parasit. u. Infektionskr., Jena, lite. Abt., xlv, no. 18-25, 

 19th June 1916, pp. 594-599. [Received 20th May 1917.] 



This article reviews the use of d'Herelle's Coccobacillus acridiorum 

 against locusts. The conclusion reached is that this bacillus is a 

 normal intestinal host of the healthy locust and that only direct 

 injection of this bacterimn into the abdominal cavity will kill them. 



Krausse (A.). Zur Systematik und Naturgeschichte der Psylliden 

 (Springlause) und speziell von P syllepsis fraxini, L. [Systematic 

 and bionomic Notes on the Psyllidae, especially Psyllopsis 

 fraxini, L.] — Centralbl. Bakt. Parasit. u. Infektionskr., Jena, 

 lite Abt., xlvi, no. 1-5, 15th July 1916, pp. 80-96, 30 figs., 

 1 plate. [Received 20th May 1917.] 



A full review of the work already done on Psyllopsis fraxini, L., is 

 given, together with biological notes on this insect and a number of 

 sketches illustrating its morphology. Fraximis excelsior, L., is the 

 principal of the various species of ash infested. The injury is usually 

 unimportant, but when the trees are seriously infested, their growth 



