Melomys castelnauii (2) A common scansorial rain-fourt rat at Lockerbie occasionally working out a little way into open "forest". Present also at Newcastle Bay. Other specimens were taken in the creeks (falling sand) which cut through the dunes to the sea. None at the Tardine. A possible second species was trapped by Van in the dense-birding dwarfed Callophyllum. A similar species in the scrub of Patter's Road of Inn Reye. It sometimes ventured out into grassy country. At Mt Tozer a member was seen in the scrub. Only three taken at Primm's Creek (2 Q.) A fair series collected at the McPherson Raps, with east river slopes. A large series with four 28-30 ft. war slopes of Mt Finnigan, 800-3200 ft. One at Block Mountain Examples of an unusually large rain-fourt Melomys found at Upper Neboit R. Melomys roseni luteillus. This tiny species was found at Patter's Road & Inn Reye but not farther north, though it is a close relative of the New Guinea sp. It inhabits grasslands. A good series was taken in the Inn Reye Area. Another good series at Mt Tozer, also 6 at the upper parts of the mountain in "Pardan Bully" containing Pardahus and Cot shunts grasses. It spread steadily into dwarf Casuarina forest when it smashes used the cores formed by cloth-If Casuarina reeds, like Pinus needles, then formed a mat covering fallen sticks etc. & left many run-way-like openings. Four or five of these were used by this Melomys. Two at Primm's Creek, Two at Winooski; Two at Arcturus R.; one at Glen- close to winsick. Four taken at Camp Oron Pocket, McPherson Raps. One at Abayoral Seven at Shipton's Flats: feet 24-26 mm.