The coast of _Malacca, Tenasserim_ and the coasts northward, appear in the greater part to be low and muddy: where reefs occur, as in parts of _Malacca Straits_, and near _ Singapore_, they are of the fringing kind; but the water is so shoal, that I have not coloured them. In the sea, however, between Malacca and the west coast of Borneo, where there is a greater depth from forty to fifty fathoms, I have coloured red some of the groups, which are regularly fringed. The northern _Natunas_ and the _Anambas_ Islands are represented in the charts on a large scale, published in the “Atlas of the Voyage of the _ Favourite_,” as fringed by reefs of coral, with very shoal water within them.—_Tumbelan_ and _Bunoa_ Islands (1° N.) are represented in the English charts as surrounded by a very regular fringe.—_St. Barbes_ (0° 15′ N.) is said by Horsburgh (vol. ii, p. 279) to be fronted by a reef, over which boats can land only at high water.—The shore of _Borneo_ at _Tunjong Apee_ is also fronted by a reef, extending not far from the land (Horsburgh, vol. ii, p. 468). These places I have coloured red; although with some hesitation, as the water is shallow. I might perhaps have added _Pulo Leat_, in Gaspar Strait, _Lucepara_, and _Carimata_; but as the sea is confined and shallow, and the reefs not very regular, I have left them uncoloured. The water shoals gradually towards the whole west coast of _ Borneo_: I cannot make out that it has any reefs of coral. The islands, however, off the northern extremity, and near the S.W. end of _Palawan_, are fringed by very distant coral-reefs; thus the reefs in the case of _Balabac_ are no less than five miles from the land; but the sea, in the whole of this district, is so shallow, that the reefs might be expected to extend very far from the land. I have not, therefore, thought myself authorised to colour them. The N.E. point of Borneo, where the water is very shoal, is connected with Magindanao by a chain of islands called the _Sooloo Archipelago_, about which I have been able to obtain very little information; _Pangootaran_, although ten miles long, entirely consists of a bed of coral-rock (“Notices of E. Indian Arch.” p. 58): I believe from Horsburgh that the island is low; not coloured.—_Tahow Bank_, in some old charts, appears like a submerged atoll; not coloured. Forrest (“Voyage,” p. 21) states that one of the islands near Sooloo is surrounded by coral-rocks; but there is no distant reef. Near the S. end of _ Basselan_, some of the islets in the chart accompanying Forrest’s “Voyage,” appear fringed with reefs; hence I have coloured, though unwillingly, parts of the Sooloo group red. The sea between Sooloo and Palawan, near the shoal coast of Borneo, is interspersed with irregular reefs and shoal patches; not coloured: but in the northern part of this sea, there are two low islets, _ Cagayanes_ and _Cavilli_, surrounded by extensive coral-reefs; the breakers round the latter (Horsburgh, vol. ii, p. 513)