The attached provisional list of participants attending the twenty-fourth sessions of the Subsidiary Body for Scientific and Technological Advice and the Subsidiary Body for Implementation, to be held from 18 to 26 May 2006, and the first session of the Ad Hoc Working Group on Further Commitments for Annex I Parties under the Kyoto Protocol, to be held from 17 to 25 May 2006, has been prepared on the basis of information received by the secretariat as at Thursday, 11 May 2006. A final list of participants will be issued on Friday, 26 May 2006, taking into account additional information received by the secretariat prior to that date and including any corrections submitted. Corrections should be given to Ms. Heidi Sandoval (Registration counter) by 12 noon, at the latest, on Tuesday, 23 May 2006