301 



Plant Sanita tion 



of food for the first month. During this period they remain almost stationary 

 and can be easily collected and destroyed. 



I have received several enquiries relating to the chemical (Carbon bisulphide), 

 that I have been recommending for the extermination of "white-ants" (Termites). 

 As the shipping companies refuse to carry it, it will be necessary to manufacture 

 the Bisulphide locally. The Government Chemist has designed a handy apparatus 

 to generate the gas directly into the ants' nests, thus avoiding the difficulty and 

 danger of condensation. A sample machine is now being made, and will be tested 

 in the Botanical Gardens. The machine will be portable and easily transported 

 from place to place. 



EXPLANATION OF PLATE. 



Psyche sp. undetermined. 

 Clialia doubledayii. 

 Psyche vitrea. 

 Acanthopsyche cana. 

 Psyche albipes. 

 Clania vanegata. 

 Clania crameri. 

 Psyche griseata. 

 A canthopsyche minima. 

 A canthopsych e hypoleuca . 

 A canthopsyche subteralbata. 

 Acanthopsyche minor. 

 Psyche rotunda. 

 Psyche sp. undetermined. 

 Pteroxys goniatus. 



The Tortrix Pest. 



(Report of a Meeting of the Maskeliya Planters' Association held 2:~>th April, 1906.) 



The tortrix pest, which has for some time been prevalent in the district, 

 to a greater extent than ever before, was mentioned by the Chairman, who 

 was presiding over his first general meeting. He said it had seemed to him 

 previously that he was going to have an easy year of office, but he thought 

 they would agree with him that the subject of the tortrix pest, which was on 

 the agenda of the meeting, was a very serious one, not only in that district 

 but in the other parts of the island. To that meeting they had to welcome 

 the Government Entomologist, Mr. Green, and also the estate inspector of one 

 of their largest companies, the Chairman of the Dikoya Association, Mr. R. H. 

 Eliot, both of whom were going to take part in the discussion. 



THE CHAIRMAN'S OPINION. 



The Chairman continuing said : I think that most of you will agree 

 with me that it has become a matter of extreme importance to this district. 

 There is no doubt whatever that on many estates it is now much worse than 

 it has ever been before, and that it has spread to several estates which have 

 never had it at all badly until this year. I understand that on one estate it 

 is so bad on one large field that for months the coolies have hardly been able 

 to get any flush off it, and that the field instead of being green is brown all 

 over. There is, however, one comfort, and that is that it is not by any means 

 a new pest. We were informed at our last Committee meeting that there 

 was a very bad attack on Gorthie flat 30 years ago. Speaking from my own 

 experience, I well remember a very bad attack on my factory field the year I 

 came to Maskeliya, 17 years ago. There was also a very bad attack about five 

 years ago on several fields, but undoubtedly we have had it worse this year 

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