361 



Frequently turning over the soil, and dusting the plants with 

 slaked lime or other powdery substances, such as fresh pyrethrum, 

 are methods that may be tried. Where violets are grown commer- 

 cially, experiments with hydrocyanic acid gas should be made. 



Lesne p.). Une Invasion r^cente de VEurytoma des Amandes 

 {E. amygdali. G. End.) dans la Region syrienne. — Bull. Soc. Path. 

 Veg. France. Paris, vii, no. 2, April-June 1920, pp. 44-46. 

 [Received 21st May 1921.] 



The phytophagous Chalcid, Eurytoma amygdali, occurs in Syria, 

 where its larva does severe damage to almonds [R.A.E., A, v, 374]. 

 No methodical study of combative measures has been made. Sprays 

 might be applied either to repel the females or to kill the newly- 

 hatched larvae. Infested material should be kept in receptacles 

 permitting the parasites of this pest to escape. The author has 

 obtained a Chalcid parasite, unfortunately in too bad a condition 

 for identification. A Salticid spider takes up its abode in the holed 

 almonds and sometimes captures E. amygdali. 



PuTTEiMANS (A.). Obseivations sur la Biologie du Tylenchus devas- 

 tatrix, Kiihn. — Bull. Soc. Path. Veg. France, Paris, vii, no. 2, 

 April- June 1920, pp. 66-67. [Received 21st May 1921.] 



In exceptional cases Tylenchus devastatrix, Kiihn, may attack the 

 aerial parts of a plant, possibly when there is a lack of humidity in 

 the soil. In 1905 in Brazil the author observed this Nematode 

 infesting such portions only of lucerne [Medicago saliva). This was 

 at the end of the dry season, and the attack ceased with the spring 

 rains. Heterodera radicicola, which was also present, confined itself 

 to the underground parts of the plants. 



CoTTE (J.). Une Invasion de Deilephila lineata, F., var. livornica, 

 Esp. (Lepid.) en Provence. — Bull. Soc. Path. Veg. France, Paris, 

 vii, no. 3, July-September 1920, pp. 76-79. 



In the spring of 1920 an outbreak of Deilephila lineata var. livornica 

 was observed in vineyards in the department of Bouches-du-Rhone. 

 An outbreak of a similar, and perhaps the same, caterpillar also occurred 

 in Var. These outbreaks are probably due to a temporary relaxation 

 of natural control. The winter was particularly mild, and insects 

 not usually seen at that period of the year occurred in consequence. 



V.A.YSSIERE (P.). Quelques Insectes nuisibles aux Cultures meridionales 



en 1920. — Bull. Soc. Path. Veg. France, Paris, vii, no. 4, October- 

 December 1920, pp. 124-128. [Received 21st May 1921.] 



The following were among the insect pests noticed in the department 

 of Bouches-du-Rhone in the spring of 1920 : — Coleoptera : the 

 Chrysomelids, Cassida deflorata on artichoke and Colaspidema atrum 

 on lucerne ; and the weevils, Hypera {Phytononvus) variabilis on lucerne, 

 Rhynchites cupreus on cherry, and Anthononius pomorum on apple. 

 Lepidoptera : Cnethocainpa pityocampa on pine, Malacosoma neustria 

 on various trees, including oak, fruit trees, and especially almond, 

 Porthetria {Lymantria) dispar on oak, Diloba coeruleocephala on almond. 



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