405 



of doing great injury. The best time to spray varies with the season, 

 usually just before the blossoms burst. A watch should be kept for 

 the first sign of spotting of the leaves — ^then, after an interval of ten 

 days to allow the majority of the bugs to hatch, the spray should ])e 

 applied. A second spraying immediately after the petals have fallen 

 is beneficial. A formula that has proved satisfactory is :— nicotme 

 (98-99 per cent.) 3 oz., soft-soap 4 lb., water 40 gals. This wash is 

 expensive, but less efficient sprays are a waste of labour against Capsids, 

 while nicotine and soap will kill Aphids, apple- sucker [Psylla mali] 

 and a good proportion of any winter moth [Cheimatohia brumata] 

 caterpillars that may be present. 



LiZER (C). Nota acerca de la Presencia do la Sitotroga cerealella, 

 Oliv., en la Rep^blica Argentina. [A Note on the Occurrence of 

 S. cerealella in Argentina.]— P%m, Buenos Aires, iv, no. 18, 31st 

 December 1919, pp. 530-531. [Received 19th July 1920.] 



The author corrects the statement contained in a paper by Brethes 

 in which the grain pest, Sitotroga cerealella, is said to be recorded for the 

 first time in South America [R.A.E., A, vii, 126], and points out that 

 this moth was recorded as a serious pest of maize in Buenos Aires by 

 Dr. C. Berg in 1875. 



Joan (T.). Nota sobre la Presencia en la Republica Argentina de 

 un Enemigo natural de los Gorgojos y Palometas del Trigo y del 

 Maiz. [A Note on the Occurrence in Argentina of a Natural 

 Enemy of Pests of Wheat and Maize.] — Physis, Buenos Aires, iv, 

 no. 18, 31st December 1919, pp. 573-574. [Received 19th July 

 1920.] 



The presence is recorded in Argentina of the Acarid, Pediculoides 

 ventricosus, as an important enemy of the two chief grain ^ests,Sitotroga 

 cerealella, 01., and Calandra {Sitophilus) oryzae, L. This mite is so 

 prolific that it would seem easy to propagate it artificially as a check to 

 these pests of cereals, but as it is known to attack the stems of wheat 

 and maize it would be necessary to make a thorough study of its habits 

 ia order to determine the advantageousness or otherwise of this 

 proceeding. 



Lahille (F,). Nota sobre un nuevo Genero de Diaspinae. [A Note 



on a new Genus of Diaspinae.] — Physis, Buenos Aires, iv, no. 18, 



] 31st December, 1919, pp. 595-599. [Received 19th July 1920.] 



The Coccid, Paradiasjyis lizerianus, gen. et sp. n., is described from 



the Chubut .region, where it was taken on leaves of Chuquiragua 



\ avellanedae and was at fiirst thought to be Aulacaspis [Diaspis) 



\ pentagona. A Chalcid parasite emerged from some of the female 



scales. 



Contra o " Pulgao " branco das Laranjeiras. [Against Icerya pur- 

 chasi.] — Chacaras e Quintaes, S. Paulo, xxi, no. 6, 15th June 1920, 

 p. 463. 



The Ministry of Agriculture of S. Paulo, Brazil, is importing from 

 ' Uruguay the Coccinellid, Novius cardinalis, in order to check the 

 I infestation of orange trees with the scale, Icerya purcliasi. 



