a spectral - sensitized silver halide photographic emulsion containing in supersensitizing amounts the combination of 1 . at least one sensitizing dye represented by the formula ## equ1 ## wherein z 1 and z 2 are the atomic groups necessary for forming a benzoxazole ring or a napthoxazole ring , in which a benzene nucleus of the ring may be substituted ; r 1 and r 2 are aliphatic groups and at least one of r 1 or r 2 is a carboxyalkyl group or a sulfoalkyl group ; r 3 is a hydrogen atom or an alkyl group ; x is an acid anion group ; and m is 1 or 2 and m is 1 when the dye forms an intramolecular salt having a betaine like - structure , 2 . at least one sensitizing dye represented by the formula ## equ2 ## wherein z 3 is an atomic group necessary for forming a 5 - membered or 6 - membered heterocyclic ring which may be substituted by substituents other than r 4 ; z 4 is an atomic group necessary for forming a 2 - pyrazoline - 5 - one ring nucleus which may be substituted ; r 4 is an aliphatic group ; r 5 is a hydrogen atom , an alkyl group , or an aryl group ; and n is 1 or 2 .