342 



already spread over the whole of West Anatolia. The eggs are 

 deposited in batches of about 35 during a period of 6 weeks ending 

 in mid-August. About 8 or 9 months later, from mid-March to mid- 

 April, the hoppers hatch out. The measures against the eggs and 

 hoppers were organised on mihtary lines. About 87,000 acres were 

 ploughed up and about 6,420 metric tons of eggs were destroyed. 

 The hoppers were driven together and either trampled or beaten to 

 death. As this involved a disproportionate number of workers — - 

 from 450,000 to 500,000 people being employed in 11 districts — a 

 new method was introduced in which strips of zinc about 1 foot high 

 were placed across the path of the invasion with trap- trenches on the 

 side nearest the locusts. By means of such a strip, about | a mile 

 long, 35-40 men were able to catch about 100 metric tons of hoppers 

 in 2 days ; with the old system at least 1 ,000 workers would have 

 been required. 



Schumacher (F.). Pseudococcus vovae, Nassonow, eine fiir Deutsch- 

 land neue Schildlaus. [Pseudococcus vovae, Nassonov. a Scale-insect 

 new to Germany.] — Zeitschr. f. Pflanzenkrankheiten, Stuttgart ^ 

 xxvii, no. 7-8, 31st January 1918, p. 366. (Abstract from 

 Sitzungsber. d. Gesell. naturf. Freunde zu Berlin, 1916, pp. 346-347.] 



In 1916 the author found Pseudococcus vovae, Nass., in great 

 abundance in Brandenburg on Juniperus communis, the same plant 

 on which it was discovered by Nassonov in Poland in 1906. This 

 constitutes the first record of this scale in Germany. 



Schumacher (F.). Auftreten einer Tamariskenzikade in Brandenburg. 



[The Appearance of a Tamarisk Cicada in Brandenburg.] Zeitschr. 

 f. Pflanzenkrankheiten, Stuttgart, xxvii, no. 7-8, 31st January 1918, 

 p. 368. (Abstract from Sitzungsber. d. Gesell. naturf. Freunde zu 

 Berlin, 1916, pp. 241-244.) 



In October 1916 tamarisk plants near Berlin were found to be 

 infested by the cicada. Opsins heydeni, Fischer, which apparently is 

 more widely distributed thi'ough Germany than has hitherto been 

 believed. 



Schumacher (F.). Ueber die Gattung Stethocomts, Flor (Hem. Het. 

 Caps.). [The Genus Stethoconus, Flor (Hem. Het. Caps.).] — 

 Zeitschr. f. Pflanzenkrankheiten, Stuttgart, xxvii, no. 7-8, 31st 

 January 1918, p. 368. (Abstract from Sitzungsber. d. Gesell. 

 naturf. Freunde zu Berlin, 1916, pp. 344-346.) 



In 1910 Nawa recorded in Japan {Insect World, xiv, p. 8) a Capsid 

 enemy of Stephanitis (Tingis) pyrioides, which is allied to the European 

 pear Tingid, S. {T.) pyri. The larvae of the two species are very 

 similar. The author considers this Capsid to be Stethoconus japoniciis. 

 S. mamillosus, Flor {cyrtopeltis, Flor) is an enemy of Stephanitis pyri 

 in Europe, its larvae sucking those of the latter. Besides the apple 

 and pear, S. pyri injures the apricot, peach. Primus lusitanica (Portugal 

 laurel) and Juglans regia (walnut) ; in Livonia it is attacked by 

 Stethoconus oberti, Kol. As an indirect means of checking the pear 

 Tingid is of high practical value, a further study of the habits of these 

 Capsids is advisable. 



