224 



Como termino la Prospaltella herlesei con el Diaspis pentagona. [How 



P. herlesei eradicated D. pentagona.] — Uruguay : Minist. Indust., 



Defensa Agricola, Bol. Mens., Montevideo, i, no. 3, March 1920, 



pp. 55-58, 12 figs. [Received 28th February 1922.] 



This is a popular account of the parasitism of Diaspis pentagona 



by Prospaltella herlesei. 



El Pulgon del Manzano, Schizoneura lanigera. [The Apple Aphis, 



Eriosoma latiigerum.] — Uruguay : Minist. Indust., Defensa 



Agricola, Bol. Mens., Montevideo, i, no. 4, April 1920, pp. 97-98, 



1 fig. [Received 28th February 1922.] 



Autumn and winter measures against Eriosoma lanigerum, Hausm., 



include the application of tobacco dust to the uncovered roots. Rain 



will then bring the nicotine into contact with the Aphids and prevent 



re-infestation in the following year. The trunk and branches should 



be washed with a 4 per cent, solution of potash soap or a 5 per cent. 



solution of " Rubina," which is an official preparation of vegetable 



tar and solvent and poisonous ingredients. 



La Lucha contra la Langosta ; Convenio entre el Brasil y el Uruguay. 



[Anti-locust Work ; a Convention between Brazil and Uruguay.] 



— Uruguay : Minist. Indust., Defensa Agricola, Bol. Mens., 



Montevideo, \, no. 7, July 1920, pp. 59-60. [Received 28th 



February 1922.] 



By a convention dated 7th May 1920, the Brazilian and Uruguayan 



governments agreed to an exchange of information relating to locusts 



in their territories and to the free passage of staff and apparatus across 



their common frontier whenever necessary. 



Brethes (J.). El Bicho de Cesto ; como vive, se multiplica y difunde. 



[The Bag-worm ; its Habits, Increase and Spread.] — Uruguay : 



Minist. Indust., Defensa Agricola, Bol. Mens., Montevideo, i, 



no. 7, July 1920, pp. 167-174, 8 figs. [Received 28th February 



1922.] 



The bag-worm, Oeceticus platensis, Berg, is a well-known and 



important pest of trees in many provinces of Argentina and in those 



of Uruguay with a similar climate. Eucalyptus and a very few other 



trees are the only ones immune from infestation. 



La Lucha contra el Pulgdn del Manzano. [Work against the Apple 



Aphis.] — Uruguay: Minist. Indust., Defensa Agricola, Bol. 



Mens., Montevideo, i, no. 9, September 1920, pp. 207-208. 



[Received 28th February 1922.] 



This note records the measures taken with a view to importing 



Aphelinus mali, Hald., a parasite of Eriosoma lanigerum, Hausm., 



which is a dangerous pest of fruit trees in Uruguay. 



La Oruga de los Coles, Pieris hrassicae. [The Cabbage Butterfly.] — 



Uruguay : Minist. Indust., Defensa Agricola, Bol. Mens., 



Montevideo, i, no. 9, September 1920, pp. 223-224, 1 fig. [Received 



28th February 1922.] 



The remedies advocated against Pieris hrassicae, L., are dusting 



with lime, watering with warm water at 45° C. [113° F.], or spraying 



with a 2\ per cent, solution of soap or with an emulsion containing 



10 parts of carbon bisulphide in 100 of water. 



