129 



Berlese (A.). Su "La Difesa dai Parassiti." [On the Article 

 " Defence against Plant Enemies."] — Allcvamenti, Palermo, ii, 

 no. 12, December 1921, pp. 451-452. 



In criticising the views advanced by Mattei [see above], it is pointed 

 out that the establishment by selection of a plant variety immune from 

 the pests that usually attack it may require centuries. If the insect 

 enemies of plant pests entirely exterminated them, their own continued 

 existence would be impossible. In certain cases a very efficient enemy 

 (such as the Coccinellid, Novius cardinalis, used against Iccrya pur- 

 chasi) may eradicate a pest, but it dies out itself in consequence, 

 so that its re-introduction becomes necessary if the insect reappears. 



De Stefan I (T.). Notizie critiche su Predator! e Parassiti utili. 



[Critical Notes on useful Predatory and Parasitic Insects.] — ■ 

 Allevanienti, Palermo, ii, no. 12, December 1921, pp. 450-451. 



The view is expressed that while natural enemies are very valuable 

 auxiharies in combating insect pests, they cannot be looked upon as 

 rendering artificial measures superfluous. Locusts afford an illus- 

 tration of this, and the recent international convention against them 

 [R.A.E., A, ix, 87] is quoted in fuh. 



An Ordinance to Amend the Law relating to Plant Protection. No. 35 



of 1920.— British Honduras, 12th November 1920, pp. 145-150. 



This ordinance empowers the Governor in Council to proclaim the 

 presence of any pest or disease in any specified area within the Colony, 

 and to take such measures, or to require such measures to be taken by 

 the occupier of such land, as are deemed necessary for the eradication 

 or for the prevention of the spread of diseases or pests, including the 

 total destruction of any plants, whether so affected or not. Powers are 

 also conferred on inspectors to enter land for the purposes of inspection, 

 and the liability rests with the occupier of the land for the expense 

 of carrying out the required measures, certain compensation being 

 allowed by the Legislative Council as the Governor shall think fit. 

 Non-compliance with the terms of the ordinance is punishable by a 

 fine not exceeding ;^'20. 



Insect Pest and Quarantine Ordinance, 1901. — Cevlon Govt. Gazette, 

 Colombo, no. 7235, 23rd December 1921. 



A regulation under the above ordinance, dated 22nd December 1921, 

 states that no tea seed shall be imported into Ceylon, either directly 

 or indirectly, from any place in India, and is in substitution of a 

 previous regulation in 1916 [R. A.E., A, v, 46]. 



Insect Pest and Quarantine Ordinance, 1901. — Ceylon Govt. Gazette, 

 Colombo, no. 7233, 16th December 1921. 



Regulations under section 3 of the above ordinance, dated 13th 

 December 1921, prohibit the removal or receipt from any plantation 

 of tea plants or parts of tea plants (other than tea seed or leaf for 

 manufacture), except for the purpose of scientific investigation in the 

 laboratories of the Department of Agriculture, without a permit. 

 No permit shall be granted for the removal or receipt of any tea stumps 

 or plants from any infested area to or through any area that is not 

 infested. These regulations are in substitution of previous ones 

 [of. R. A.E., A, V, 232 ; vi, 87 : viii, 168]. 



