52 



Eastham (J. W.). The Colorado Beetle in British Columhidi.^ A gric. 



JL, Victoria, B.C., vi, no. 9, November 1921, p. 216. 



This paper contains notes and observations additional to one 

 already publi.shed [R.A.E., A, ix, 560] on the Colorado beetle 

 [Leptinotaysa decemlineata] in British Columbia, being chiefly concerned 

 with its local distribution. 



Proceedings o£ the Third Convention Western Plant Quarantine Board, 

 Victoria, British Columbia, June 7 to 10, 1221.^MtMy. Bull. 

 Cal. State Dept. Agric, Sacyameiito, x, no. 7, Julv 1921, pp. 221- 

 305, 10 figs. [Received 24th November 1921.]'' 



The current quarantine problems and the work of the Western 

 Plant Quarantine Board are discussed, the various delegates giving 

 accounts of the situation in Arizona, Idaho, Utah, Lower California, 

 British Columbia, and Oregon. A copy is given of the resolutions 

 drafted and passed at the meeting. 



LicHTENSTEix (J.-L.). L'/aTva purchasi. Mask. [Hem. Coccidae] 

 dans I'Herault. — Bull. Soc. Ent. France, Paris, 1921, no. 16, 

 y 26th October 1921, pp. 239-241. 



^X LicHTENSTEiN (J.-L.) & Grasse (P.). De I'Apparition dans le Departe- 

 ment de I'Herault de VIccrya purchasi et de la Teigne de la Pomme 

 de Terre. — Progrcs Agric. & Vitic, Montpcllicr, Ixxvi, no. 47, 

 20th November" 1921, pp. 492-495. 



An account is given of these two pests, which have recently been 

 recorded for the first time in the Department of Herault. I eery a 

 purchasi, Mask., has probably been present for some yeai's without 

 having attracted attention. In one garden, where it is said to have 

 occurred for the past two years, it is killing mimosa, roses and Wistj.ria, 

 which it attacks for preference ; it also damages Sophora and Robinia. 

 Centres of infestation are at present isolated, but the scale multiplies 

 rapidly and is easily carried by the wind. Moreover, the climate 

 of the south of France is favourable to it, as the winters are not severe 

 enough to kill it. Prompt measures are therefore necessary, and it 

 is requested that any occurrence of the pest should be reported, and, 

 above all, that transport of any parts of plants infested with it should 

 be avoided. Infested parts of plants should be cut out and burnt, 

 and the plants should be brushed with a strong nicotine solution or a 

 polysulphide. It is hoped that the Coccinellid, Novius cardinalis, 

 introduced to combat this pest, will ultimately prove of greeit 

 assistance. 



Against Phthorimaea opereulella, Zell. (potato moth), an effort is 

 being made to introduce the Braconid parasite, Hahrobracon johanseni. 

 Insecticides and bait traps have failed to reduce its numbers ; the only 

 successful remedy seems to be to store the tubers under a layer of 

 sand and thoroughly disinfect the storehouses with a paraffin and soap 

 emulsion. All infested tubers should be burnt, treated with lime, 

 or boiled and used as food for stock. After the crop is gathered, 

 sheep turned into the fields will eat the infested plants that are left. 

 Co-operation in these measures is essential. 



