Bangladesh and India are set to swap more than 150 parcels of land that lie in each other's territory.

Officials say the two sides plan to formalize the land exchange during a visit by Indian Prime Minister Manmohan Singh to Bangladesh next week.

India has 111 enclaves within Bangladesh totaling close to 7,000 hectares of land. Bangladesh has 51 enclaves, or 2,800 hectares of land, in India.

The proposed transfer would amount to a loss for India of about 4,200 hectares of land.

Ancient folklore says the enclaves are the result of gambling wins and losses by local princes hundreds of years ago.

The enclaves survived the partition of the Indian subcontinent in 1947 and Bangladesh's independence from Pakistan in 1971.