_Entomophila rufogularis_, Gould in Proc. of Zool. Soc., Part X. p. 137. This is another of the novelties that has rewarded the researches of the Officers of H.M.S. Beagle on the northern coast of Australia; the specimens from which my figures were taken were transmitted to me by my friend Benjamin Bynoe, Esq., of that vessel. The _Entomophila rufogularis_ is the least of the genus yet discovered, and is more nearly allied to _E. albogularis_ than to _E. picta_, from both of which it may at once be distinguished by the red colouring of its throat. The sexes, judging from the specimens sent me by Mr. Bynoe, are very similar in their markings. Nothing whatever is known of its habits and economy. Head and all the upper surface brown; wings and tail darker brown; primaries, secondaries and tail-feathers margined externally with wax-yellow; throat rust-red; sides of the head and all the under surface very pale brown; bill and feet dark purplish brown. The figures are those of the natural size. [Illustration: ACANTHOGENYS RUFOGULARIS: _Gould_. _J. Gould and H. C. Richter del et lith._ _C. Hullmandel Imp._ ] ACANTHOGENYS RUFOGULARIS, _Gould_. Spiny-cheeked Honey-eater. _Acanthogenys rufogularis_, Gould in Proc. of Zool. Soc., Part V. p. 153; and in Syn. Birds of Australia, Part IV. Numerous and diversified as are the forms of the great family of the _Meliphagidæ_, the present species has always appeared to me more than usually interesting, because in the first place few are more elegantly formed, and in the second it differs widely from all others in plumage, and in the singular spiny processes which adorn its cheeks and ear-coverts. In its habits and general economy it bears a close alliance to the Wattle-birds (_Anthochæræ_), but still presents in these respects sufficient differences to warrant its separation into a distinct genus or subgenus, as naturalists may think fit to designate the division.