and the north-western shores, in the parallel of about 15 degrees South: but whilst this geographical diffusion has been remarked in reference to those particular species, the range of Grevillea gibbosa, a plant discovered at Endeavour River by Sir Joseph Banks, is now tolerably well defined by observations made during the late voyages, from which it appears to be circumscribed to an area not exceeding one hundred and twenty miles on the East Coast. In the course of the progress of the land expedition above referred to, the discovery of another plant of this natural order by Mr. Fraser, occurred in New South Wales, in a tract of country west of the coastline, about the parallel of 31 degrees, where I am informed it is a timber-tree of very large dimensions; and seemingly it constitutes a new genus, nearly allied to Knightia of Mr. Brown, a native of New Zealand, as I judged from a casual view of some specimens. LABIATAE and VERBENACEAE. The mass of these orders (which are admitted to be very nearly allied to each other) seems in Australia to exist on its eastern coast, within and beyond the tropic, and the species in the collection lately formed, are referred to ten established genera, of which (as belonging to Verbenaceae) Vitex and Premna are most remarkable on the North-western Coast. Of Labiatae, a new species of Labillardiere's genus Prostranthera was discovered upon Dirk Hartog's Island, where, as also at Rottnest Island, Westringia was observed, of species, however, common to the South Coast. BORAGINEAE. Some very important amendments, in reference to the limits of certain genera of the order have been proposed by Mr. Brown in his Prodromus, where the characters are remodelled to the exclusion of certain species previously referred to them by authors. Of Cordia (to which Varronia of Linne, and Cerdana of Ruiz and Pavon, have at length been united) only two species have been found in Terra Australis, of which one had been previously discovered in New Caledonia; and during the late voyages C. orientalis has been observed on the North-west Coast, where a third species of Tournefortia in complete fructification was discovered; and the Herbarium contains some species of that section of Heliotropium, having a simple straight spicated inflorescence, which were also found on those equinoctial parts of the continent.