489 



Marie (P.). Section d'Entomologie. — Bull Soc. Agric. France, Paris, 

 September 1920, pp. 211-212. 



In view of tlie danger of extending the ravages of the potato moth, 

 Phthorimaea ojjercidella [R.A.E., A, viii, 121], it is suggested that the 

 prohibition of the transportation of potatoes from the infested areas 

 of the Department of Var should be re-established. 



The urgent necessity for adopting systematic control measures 

 against Nygmia phaeorrhoea {Liparis chri/sorrJioea) (brown-tail moth) 

 is insisted upon [R.A.E., A, viii, 6]. 



DuFRENOY (J.). Observations biologiques sur les Xylophages du Pin 

 Maritime et leurs Parasites. [Biological Observations on Borers 

 of Pinus maritiina and their Parasites.] — Bull. Soc. Vidg. 

 Zool. Agric, Bordeaux, xix, nos. 7 & 8, July & August 1920, pp. 

 65-70 & 81-87, 6 figs. 



The natural enemies of the Scolytid Ips {Tomicus) sexdentatus are 

 discussed ; these include a fungus, Beauveria globulifera, and a 

 Nematode. Predaceous or parasitic insect enemies of this beetle 

 have not been noticed. 



La Fourmi d' Argentine en France. — Bull. Soc. Vulg. Zool. Agric, 

 Bordeaux, xix, no. 8, August 1920, pp. 91-93. 



Attention is drawn to the occurrence of the Argentine ant, Iri- 

 domgrmex humilis, in the south-east of France [R.A.E., A, viii, 326]. 

 The remedial measures advocated have been noticed elsewhere [loc. 

 ait., 285]. 



Ursat (J.) & Gaumont (L.). La Lutte contre le Bombyx cul-brun 



{Liparis chrgsorrhoea). — Bull. Soc. Vulg. Zool. Agric, Bordeaux, 

 xix, no. 8, August 1920, pp. 93-94. 



Owing to the increase of Nygmia phaeorrhoea {Liparis chrgsorrhoea) 

 during 1919 in Loiret in the vicinity of Orleans, destruction of the 

 nests by the 15th March was made obhgatory. A total of 2,183,179 

 nests were collected under the auspices of the Department of Agri- 

 culture at a cost of about £1,300. Many additional nests were destroyed 

 by indi\ddual enterprise. 



Swaine (J. M.). Forest Insect Control Work in British Columbia. — 



Agric Gaz. Canada, Ottawa, vii, no. 8, August 1920, pp. 642-644. 



Yellow pine {Pinus ponderosa) and lodge-pole pine {P. contorta mur- 

 rayana) in southern British Columbia have suffered heaw losses 

 during the past twelve years from extensive outbreaks of two des- 

 tructive pine bark-beetles, Dendroctonus brevicomis (western pine 

 bark-beetle) and D. monticolae (mountain pine bark-beetle). In 

 British Columbia, D. brevicomis attacks yellow pine only, but 

 D. monticolae also attacks western white pine {Pinus monticola) and 

 lodge-pole pine. 



The beetles appear in July, and bore into the trees in enormous 

 numbers. The grubs that hatch from their eggs excavate numerous 



