Marianas are also found on the upper reaches of the Putumayo across to the Yapura.
As to the distribution of coral reefs within the Pacific area, in Micronesia the northern Marianas (volcanic) are without reefs, which, however, are well developed in the south.
Megapodes are found in the Solomon Islands, the New Hebrides, Samoa, Tonga, the Carolines and the Marianas.
Magellan reached the " Ladrones " (Marianas) in 1521, and voyaged thence to the Philippines, where he was killed in a local war.
In 1767 Samuel Wallis worked through the central part of the Paumotus, and visited Tahiti and the Marianas, while his companion Philip Carteret discovered Pitcairn, and visited Santa Cruz, the Solomons and New Pomerania.
