TROGON NEOXENUS, Goud Welcome Trogon. (Young Male.) Mas. jun. Trog. capite, collo, pectore femoribusque cineraceo-fuscis ; plumis dorsi, uropygique, tectricibus ale, superioribusque caude, ad basin Juscis, ad apicem metallic viridibus ; alis Suscis, promarus ad basin eatis albo marginatis ; cauda metallice ceeruled, rectricibus utringue tribus externis ad apicem large albis ; abdomine crissoque splendide coccineis ; rostro plumbeo ; pedibus fuscrs. Head, neck, breast and thighs greyish brown; all the feathers of the back, rump, upper tail- and wing-coverts brown at the base, and deep shining metallic green at the extremity ; wings brown, the primaries margined on the base of the exterior web with greyish white ; tail deep metallic blue, the three lateral feathers on each side largely tipped with white ; abdomen and under tail-coverts rich scarlet; bill lead colour ; feet brown. Total length, 134 inches; Sz//, 1; wing, 7%; tarl, 8 ; tarsi &? a Trogon neoxenus, Gould in Proc. of Zool. Soc. Part VI., 1838. I nave seldom been more gratified by the sight of any species of this beautiful family than I was on the receipt of the bird figured in the accompanying Plate, which exhibits characters of the highest interest, although the specimen (the only one I have seen) is evidently in a state of immaturity. Judging from analogy, I should conceive that it is the young male of an aberrant species of that splendid minor group, to which the sub-generic name of Cadurus has been applied ; and that the adult, which is at present unknown, will, whenever it is discovered, prove to be a bird of very great beauty. ‘The individual represented was received from Mexico by John Taylor, Esq., by whom it was presented to the Zoological Society of London. The difieuley of assigning a specific name to any species of which the young only has been seen, has induced me to propose that of neoxenus (welcome stranger) for the present bird, adult examples of which will be sought for with the highest interest by every ornithologist. esl 2