soon indicate by their actions the immediate locality of the nest. The male constantly cheers his mate with a pretty lively song, which, although neither loud nor voluminous, serves to give life to its secluded abode, which in many instances is in the depths of the forests, where few sounds are heard except the monotonous note of the Honey-sucker, and the perpetual rippling of the rivulet as it steals over the stony bed of the gully. It is sometimes seen, particularly towards evening, to leave its lurking-place and seek any little open part or glade in the forest, doubtless attracted to such situations in search of food. The sexes present no difference whatever in the colouring of the plumage, consequently dissection is necessary to distinguish them. The nest is of rather a large size and of a domed form, outwardly composed of any coarse materials at hand, such as leaves, tufts of grass, roots, &c., the interior being formed of similar substances, but of a finer kind, and the whole carefully lined with feathers. The eggs, which are large for the size of the bird, are three in number, of a reddish white, curiously freckled and marked all over with reddish brown, particularly at the larger end, where the markings assume the form of a zone; they are ten and a half lines long by eight lines broad. Lores blackish brown, above which an obscure stripe of white; crown of the head and all the upper surface, wings and tail dark olive-brown with a tinge of red, which becomes more conspicuous on the rump and tail-feathers; spurious wing blackish brown, each feather margined with white; throat greyish white, spotted with blackish brown; chest and centre of the abdomen brownish yellow, the former singularly but more obscurely spotted than the throat; flanks chestnut-brown; bill blackish brown; legs dark brown; irides straw-yellow. The Plate represents the two sexes of the natural size. [Illustration: SERICORNIS OSCULANS: _Gould_. _J. Gould and H. C. Richter del et lith._ _Hullmandel & Walton Imp._ ] SERICORNIS OSCULANS, _Gould_. Allied Sericornis. _Sericornis osculans_, Gould in Proc. of Zool. Soc., January 27, 1847.