‘The smaller boys were known now by the generic title of  ‘littluns’
The decrease in size, from Ralph down, was gradual; and though there was a dubious region inhabited by Simon and Robert and Maurice, nevertheless no one had any difficulty in recognising biguns at one end and littluns at the other.
The undoubted littluns, those aged about six, led a quite distinct, and at the same time intense, life of their own. They ate most of the day, picking fruit where they could reach it and not particular about ripeness and quality. They were used now to stomach-aches and a sort of chronic diarrhoea.
They suffered untold terrors in the dark and huddled together for comfort. Apart from food and sleep, they found time for play, aimless and trivial, in the white sand by the bright water.
They cried for their mothers much less often than might have been expected; they were very brown, and filthily dirty
They obeyed the summons of the conch, partly because Ralph blew it, and he was big enough to be a link with the adult world of authority; and partly because they enjoyed the entertainment of the assemblies.
But otherwise they seldom bothered with the biguns and their passionately emotional and corporate life was their own.’ (p.61)Â
They are the younger boys on the island. They represent the uneducated, lower class who are uncared for.