PTEROGLOSSUS NATTERERII. Natterer’s Aracari. Sprciric CHARACTER. Mas. Pter. rostro rubro, ad apicem. flavescenti-albido, lined culminali, maculé. ad latera utriusque mandibule, maculaque supra singulart serraturam nigris, serraturis albis : capite supra, gul, ay s a e guttureque nigris; fasced nuchali pallide flav; dorso alusque saturate olivaceis ; rectricum sex intermediarum apicibus castaneis ; lateribus Jlavis, in castaneum ad femora transeuntibus ; caudee tectricibus inferioribus coccineis. aye Y 5 a 7 x 7 7 > sds > Tourel ye a - een ys 4 ees Foem. Capite supra, gula, guttureque pallide castaneis ; regione parotica pallide flavescenti-viridi ; dorso pallidiore. Male. Bill red, with the exception of a line of black on the culmen, a spot on the side of each mandible, and a small irregular mark of the same colour above each of the serratures, which are white; the point yellowish white ; top of the head, occiput, throat, and breast black; ear-coverts pale yellow; a lunar-shaped band of the same colour separates the black of the occiput from the back, which, with the wings, is of a dark olive; tips of the six middle tail-feathers chestnut; flanks yellow, passing into chestnut on the thighs ; under tail-coverts scarlet. Female. All those parts light chestnut which in the male are black ; the green on the back less deep, and the ear-coverts pale yellowish green ; in other respects the colouring is the same. ‘Total length, 133 inches; dz//, 22; wings, 5+; tail, 5; tarsi, 14. Pteroglossus Nattereri, Gould, Proceedings of Zool. Soc., Part II. Auruoucu I have at all times endeavoured to avoid the imposing of a specific title on a new species which did not convey some idea connected with its form or colouring, I have been induced to deviate from this rule in the present instance from the earnest desire I feel to pay a just tribute of respect to a most enthusiastic and able naturalist, through whose personal exertions in the Brazilian forests for the period of eighteen years so vast a collection has been transmitted to the capital of that country by the munificence of whose Govern- ment he was enabled to prosecute his researches; and I would here beg to offer my acknowledgements to M. Schreibers, the highly talented director of the Imperial Museum of Vienna, for the liberal manner in which he permitted me to examine the birds of this group contained in the collection under his care, and to add to my monograph a representation of this rare species. I am not aware of the precise locality in which this fine bird was obtained, but from the circumstance of its having accompanied other specimens from that part of Brazil which borders the river Amazon, it may reasonably be believed to be a native of the woods of those districts. In point of affinity it is closely allied to the Preroglossus maculatus, and with that bird and several others it will form a separate and well-defined group, possessing many peculiar characters.