++++ 1. Actions for annulment of measures - Measures against which actions may be brought - Definition - Acts with mandatory legal effects - Act adopted by an institution on a basis other than the Treaty - Lack of relevance (EEC Treaty, Art. 173) 2. Actions for annulment of measures - Parliament' s right to bring an action - Conditions of admissibility - Defence of its prerogatives - Participation in the legislative process - Affected by the Council' s choice of the legal basis of an act of secondary legislation - Admissibility (EEC Treaty, Art. 173) 3. International agreements - Conclusion - Development aid - Competence of the Member States and of the Community - Fourth ACP-EEC Lomé Convention - Performance - Financial assistance (Fourth ACP-EEC Lomé Convention of 15 December 1989) 4. International agreements - Fourth ACP-EEC Lomé Convention - Financial assistance - Sources and methods - Ad hoc financial regulation - Adoption - Legal basis - Infringement of the Parliament' s prerogatives - Absence (EEC Treaty, Art. 209; Fourth ACP-EEC Convention of 15 December 1989, Art. 231; Financial Protocol to the Convention, Art. 1; Internal Agreement 91/401/EEC on the financing and administration of Community aid under the Fourth ACP-EEC Convention, Art. 32; Financial Regulation 91/491)