421 



The plants may be covered with leaves or shields, made by stretching 

 cloth or translucent paper on a skeleton box. The adult flies may be 

 collected in the morning by hand, or with a tarred screen, and this 

 prevents much damage. Measures against the maggots are not 

 feasible, but the pupae may be destroyed by uprooting and burning 

 infested stems. This must be done before they rot, and no dead stems 

 must be left in the ground after November. The uprooted stems 

 should be stored for some time away from rain so as to ensure complete 

 combustion, and burnt, with all debris from old beds, before 20th 

 March. Co-operation is essential, and in Loir-et-Cher a subsidy up to 

 40 per cent, of the cost is available. 



Contra la Mosca del Olivo. [Measures against Dacus oleae.] — Rev. 

 Inst. Agric. Catalan S. Isidro, Barcelona, Ixx, no. 6, June 1921, 

 pp. 107-110. 



A publicity campaign has been organised in Catalonia for making 

 known the measures required against the olive fly [Dacus oleae]. 

 A circular distributed in connection with this work describes the well- 

 known methods of Berlese and of Lotrionte for combating this pest. 

 The Lotrionte formula for the poison-bait is slightly modified to read 

 as follows : Molasses 50 lb., anhydrous sodium arsenite 2 lb., boric acid 

 2 lb., borate of soda 2 lb., water up to 10 gals. The Berlese formula 

 has also been modified, the one recommended being : Water 10 gals., 

 sodium arsenite 5 oz., molasses 15 lb. 



Camacho (C). El Chape del Cerezo {Eriocampoides limacina). — 

 Serv. Policia Sanit. Vej., Santiago de Chile, 1917, 8 pp., 5 figs. 

 [Received 4th July 1921.] 



Eriocampoides limacina (cherry slug) has become increasingly 

 abundant in recent years on cherries, plums, pears and other Rosaceous 

 trees. The insect was first observed in the south of Chile, and is 

 gradually spreading each year farther north. Descriptions of the 

 stages of the insect are given and its biology is discussed. The appear- 

 ance of the first generation is very irregular, as the climatic conditions 

 vary so greatly in different parts of Chile. In Santiago, however, 

 there are undoubtedly two generations a j^ear, for newly hatched 

 larvae have been found in March, while the adults producing the first 

 generation appear in the central zone from late November to early 

 January. The usual Paris green and lead arsenate sprays are recom- 

 mended. As a long period is spent underground, cultivation of the 

 soil around the trees should be maintained, particularly in the autumn 

 and early spring, in order to expose the pupae. 



Funjicidas e Insecticidas mas usados para combatir las Enfermedades 

 de las Plantas. — Scrv. Policia Sanit. Vcj., Santiago de Chile, 

 5th Edn., 1918, 19 pp. [Received 4th July 1921.] 



This paper indicates the various kinds of diseases to which plants 

 are liable and the different classes of insects that attack them. Suit- 

 able sprays for each class are recommended, with formulae and 

 instructions for preparation. 



