_Bill_ nearly as long as the head, somewhat broad at the base, becoming compressed and pointed at the apex; _tomia_ of the upper mandible arched and slightly notched at the tip; _nostrils_ basal, oval, pierced in a membrane and protected by an operculum; _wings_ rather long, first quill spurious, the second nearly as long as the third, which is the longest; _tail_ short and nearly square; _tarsi_ short and rather feeble; hind-toe short and stout; lateral toes unequal, the inner one being rather the shortest. 301. Entomophila picta, _Gould_ Vol. IV. Pl. 50. The pointed wings of the examples of this bird I had seen prior to my visit to Australia, led me to infer that its habits were more aërial than those of the other members of the family, and such proved to be the case; for while the greater number of the latter cling to and creep about the branches, the present bird flies about the trees, captures insects on the wing, and during flight displays the beautiful yellow of its wings and the white markings of its tail to the greatest advantage. Its frail cup-shaped nest is sometimes suspended among the drooping leaves of the _Acacia pendula_. 302. Entomophila albogularis, _Gould_ Vol. IV. Pl. 51. 303. Entomophila rufogularis, _Gould_ Vol. IV. Pl. 52. I fear I have committed an error in referring the birds from the north coast (_E. albogularis_ and _E. rufogularis_) to the present genus, for upon further consideration I believe they will prove to be sufficiently different from every other form yet characterized to justify their being separated into a distinct genus. Genus ACANTHOGENYS, _Gould_. Generic characters. _Bill_ as long as the head, compressed, slightly arched, acute at the tip; the edges of the upper mandible notched near the tip, and delicately serrated; _nostrils_ sub-basal; from the base of the mandibles a naked stripe runs below the eyes, and below this the cheeks are covered with stiff spines; _wings_ moderate, the first quill-feather very short, third, fourth and fifth equal and the longest; _tail_ moderate, nearly equal; _feet_ robust, hind-toe strong and longer than the middle one, outer toe united at its base to the middle toe; _claws_ hooked. The genus _Acanthogenys_, of which only one species is known, is a form intermediate in size and in structure between the smaller Honey-eaters (_Meliphagæ_, _Ptiloti_, &c.) on the one hand, and the larger kinds (_Anthochæræ_) on the other. 304. Acanthogenys rufogularis, _Gould_ Vol. IV. Pl. 53. This species is widely distributed over the interior of the southern portion of Australia, from east to west; the sexes are alike in plumage, and the young are very similar, but are destitute of the spines on the cheek, which are scarcely assumed during the first year. The _Banksiæ_ are the trees mostly frequented by this bird, the presence of which is indicative of sterile sandy districts.