According to the "Encyclopedia of Malaysia", the Negritos (Semang or Pangan) are regarded as the earliest inhabitants of the Malay Peninsula. They live mainly in the northern regions of the country. They show physical affinities to Australo-Melanesians and mostly descend from the people of the Hoabinhian cultural period, with many of their burials found dating back 10,000 years ago. Negritos belong to various subgroups, namely the Kensiu, Kintak, Lanoh, Jahai, Jakun, Mendriq, Mintil and Bateq. Those from Perak, Kedah and Pahang are also known as Sakai ("lit". "debt slaves"), while those from Kelantan and Terengganu were called "Pangan (lit." "forest peoples"). The Senoi and Proto-Malays arrived much later, probably during the Neolithic period. As their name implies ("negrito" in Spanish means "little negroes"), they are people of short stature (1.5 meters or less), dark-skinned (colour varies from dark copper to black), with curly hair, wide noses, round eyes and low cheekbones. Physically, they resemble the indigenous Andamanese peoples of the Andaman Islands, the Aeta people in the Philippines, the Melanesians of Oceania, and the Aboriginal Tasmanians.