TEGUCIGALPA, Nov 6 - An agreement to end a four-month political crisis in Honduras collapsed on Friday after two rival leaders failed to form a government of unity to heal the damage from a June coup.

Ousted President Manuel Zelaya declared the week-old pact dead and called on Hondurans to boycott a presidential election this month because, in a surprise move, de facto leader Roberto Micheletti said he would form a new government without him.