353 



<trom]. A parasite, identified by Silvestri as Biosteres hrasiliensis, 

 may be an enemy either of this fmit-fly or of A. fratereidus, as these 

 species occur together. 



Algumas Pragas do Coqueiro. [Some Coconut Pests.] — Chacaras e 

 Quintaes, S. Paulo, xix, no. 5, May 1919, p. 403, 1 fig. 



Among coconut pests from the State of Maranhao, Brazil, the beetles, 

 lihynchophorus palmarum and Mecistomela corallma, and the butterfly, 

 Brassolis astyra, have been identified. 



Uzel(H.). Ueber Krankheiten und Schadiger derZucker-undSamenrube 

 in Bohmen in den Jahren 1916 und 1917. [Diseases and Pests of 

 Sugar Beet and Seed Beet in Bohemia in 1916 and 1917.] — 

 Zeitschr. f. Znckerindustrie in Bohmen, 1917-1918. pp. 228-233 

 and 423-430. (Abstracts in Zeitschr. f. Pflanzenkrankheiten, 

 Stuttgart, xxviii, no. 8, 15th December 1918, p. 339.) 



Nematodes and a beetle, Atoinaria linearis, were found in the earth 

 clingmg to sugar-beets that had been lifted. Seed-beet suffered 

 •chiefly, in 1917 especially, fron the black aphis ; the green aphis also 

 occurred. The flowers were injured by various beetles, usually 

 Agriotes ustulatus, and occasionally Athous niger and A. vittatus. 



2acher (F.). Ein ftir Deutschland neuer Gerstenschadling. [A Barley 

 Pest new to Germany.] — Deutsche Landwirtschaftl. Presse. Berlin, 

 xlvi, no. 38, 10th IVIay 1919, p. 275. 



From pupae taken in August 1918 from ears of barley near Berlin 

 a Chloropid fly, Lasionna cinctipes, Meig., was bred. In this case the 

 injury somewhat resembled that done by the second generation of 

 Oscinella frit (frit-fly) to barley and oats, the larvae chiefly attacking 

 the grains and pupating within the empty husks. Another Chloropid, 

 Elachiptera cornuta, Fall. , was observed on this occasion . This species 

 does not appear to have been previously recorded in Germany. 



BuRKHARDT (F.). UntcFSuchungen tiber die Bekampfung des 

 Kornkafers {Calandra grannria, L.) mittels Cyanwasssrstoff. 



[Investigations on the Use of Hydrocyanic Acid Gas against 

 C . granaria.^^ — Centralbl. Bakt. Parasit. u. Infektionskr., IP" Aht., 

 Jena., xlix, no. 1-4, 22nd January 1919, pp. 77-91, 1 fig. 



Laboratory tests with hydrocyanic acid gas made in order to ascer- 

 tain its effects on Calandra granaria are described. The temperature 

 was 60°- 68° F. (16°-20° C.) and the humidity within the small gas 

 chambers, consisting of glass bells, was 65-75 per cent, at first, increased 

 by 4 or 5 per cent, when 1 volume of hydrocyanic acid gas per 100 

 volumes of air was present and by abo\it 10 per cent, when 2 volumes 

 of the gas were present. This increase was due to the steam produced 

 during the generation of the gas. Under these conditions 1 volume of 

 igas per cent, killed the weevils in 15 hours, while 2 volumes effected 

 this result in 6 hours. Practical tests were made in a room of about 

 3,700 cub. feet space after paper had been pasted over cracks and 

 other openings. As such sealing was not so complete as that obtain- 

 able in the laboratory it was necessary to use the higher strength of 2 



