Complex sentence: Some writers have interpreted these "Atis" as "Negritos", other sources present evidence that they were not at all a dwarfed primitive people of "Negrito" type, but were rather tall, dark-skinned Indonesian type.
Split into simpler sentences: Some writers have interpreted these "Atis" as "Negritos". Other sources present evidence that they were not at all a dwarfed primitive people of "Negrito" type, but were rather tall, dark-skinned Indonesian type.