As per Census-1931, Schedule tribes are termed as “backward tribes” living in the “Excluded” and “Partially Excluded” areas. The Government of India Act of 1935 called for the first time for representatives of “backward tribes” in provincial assemblies.
The Constitution does not definethe criteria for recognition of Scheduled Tribes and hence the definition contained in 1931 Census was used in initial years after independence.
However, Article 366(25)of the Constitution only provides process to define Scheduled Tribes: “Scheduled Tribes means such tribes or tribal communities or parts of or groups within such tribes or tribal communities as are deemed under Article 342 to be Scheduled Tribes for the purposes of this Constitution.”
342(1):The President may with respect to any State or Union Territory, and where it is a State, after consultation with the Governor, by a public notification, specify the tribes or tribal communities or part of or groups within tribes or tribal communities as Scheduled Tribe in relation to that State or Union Territory.