18 



but the larvae of the moth and the cocoons of the parasites should be 

 kept in boxes closed with a net sufficiently fine to imprison the moth 

 but not its parasites. All punctured fruit should also be collected and 

 placed in these boxes. Light traps are also useful against the moths. 



Molina (E.). Nuevo m6todo para combatir toda clase de cochinilla y 

 otros insectos. [A new method for combating all kinds of 

 Coccids and other insects.] — Bol. Minist. Agric, Buenos Aires, 

 xviii, nos. 1-2, July-August 1914, pp. 102-104. [Received 

 5th November 1915.] 



A preparation consisting of lysol, 2| pints ; cyanide of potassium, 

 3 oz. ; black soap, 3 lb. ; tepid water, 20 gals., proved very efficient 

 against scales on citrus trees, but did not come generally into use 

 owing to the high cost of the first two ingredients. Subsequently the 

 following formula was found to yield exceedingly good results against 

 citrus scales such as Chrysom/phalus aonidum, Lejndosaphes heckii 

 {Mytilaspis citricola) and Coccus {Lecanium) hesperidum, which con- 

 gregate on the foliage or other smooth surfaces : Wheat flour, 60 lb. ; 

 kerosene, 3 gals. ; water, 97 gals. This mixture was modified as 

 follows, in order to control Aulacaspis pentagona and other Coccids 

 which are usually found on the trunk, branches and similar rough 

 surfaces : wheat flour, 20 lb. ; kerosene, 1 gal. ; water, 19 gals. 

 To control sucking insects unprotected by shields, such as Pseudococcus 

 (Dactylopius) vitis, the following should be used : Wheat flour, 30 lb. ; 

 kerosene, 4 gals. ; water, 96 gals. For preparing all the above, the 

 method is exceedingly simple : Half the quantity of water is boiled 

 in a container of sufficient capacity, the flour, dissolved in the remaining 

 cold water, is added and stirring is continued until the mixture has 

 been thoroughly boiled. It is then passed through a fine sieve and 

 the kerosene is added. The solution must be used warm and a sunny 

 day must be chosen for the operation. Any sprayer may be used 

 provided it has sufficient pressure to deliver a very finely divided 

 spray. 



Barroetavena (F. a.) & Girola (C. D.). Extracto de los trabajos 

 efectuados por la comisi6n nacional designada por el Ministerio 

 de Agricultura para propagar la Prospaltella {ProspaUella 

 berlesei, How.) como medio de destruir la Diaspis {Diaspis penta- 

 gona, Targ.), durante los diez primeros meses de ejercicio, desde 

 Junio 1914 a Abril 1915. [An abstract of the work done by the 

 National Commission nominated by the Ministry of Agriculture to 

 establish Prospaltella berlesei, as a means of destroying Aulacaspis 

 pentagona, during the first ten months of working, from June 1914 

 to April 1915.] — Bol. Minist. Agric, Buenos Aires, xix. nos. 5-6-7, 

 May-June- July 1915, pp. 394-415, 1 col. plate. [Received 5th 

 November 1915.] 



From June to November 1914, 1-|- million twigs parasitised by 

 Prospaltella berlesei were distributed to 5,255 fruit-growers in Argentina. 

 The parasite was established in the greater part of the area infested 



