RAMPHASTOS CITREOL^MUS, Gould. 
Citron-breasted Toucan. 
Specific Character. 
Ramph. rostro nigro, vitta latci basali, et culmine olivaceo viridibus, hoc colore gradatim cum 
Jlavido apud apicem mandibulce utriusque se commiscente; guld alba; pectore citreo, vitta 
splendide coccined cincto ; tectricibus caudce superioribus citreis. 
General plumage black; throat and chest white, the latter washed with citron-yellow, which is 
deepest in the centre, whence it gradually fades into the white of the sides of the neck 
and throat; across the lower part of the breast a band of deep blood-red; upper tail- 
coverts sulphur-yellow; under tail-coverts deep blood-red, curving upwards at the sides 
and meeting at the base of the upper tail-coverts, inducing at first sight a belief that the 
upper tail-coverts are of two colours, blood-red and sulphur-yellow; bill black, with a 
broad basal and culmenal band of greenish yellow passing into pale yellow on the tips of 
both mandibles, and deepening into orange at the gape. 
Total length, 21 inches; bill, 54; wing, 81; tail, 74; tarsi, If. 
Ramphastos citreolcemus, Gould in Proc. of Zool. Soc., Part XI. p. 147-—Gray and Mitch. 
Gen. of Birds, vol. ii. p. 403, Ramphastos, sp. 15. 
-- citreolaimus , Bonap. Consp. Gen. Av., p. 92, Ramphastos, sp. 7- 
An examination of the Prince of Massena’s collection at Paris in 1843 afforded me an opportunity of giving 
a description of a species of Toucan I had never before seen. The only information I could obtain respect¬ 
ing this new bird, of which His Highness possessed a male and a female, was that it had been received in 
a collection from Santa Fe de Bogota in Columbia. In the interval that has since elapsed, the Prince’s fine 
collection has been transported to North America, and now finds a resting-place in the extensive Museum 
of the Academy of Sciences at Philadelphia. Being desirous of instituting a more rigid examination of the 
species, and a more careful comparison of it with the allied members of the family than I was enabled to 
do when it first came under my notice, I applied to T. B. Wilson, Esq. of Philadelphia for another sight 
of it, and he has, with the utmost liberality, allowed it again to cross the Atlantic for this purpose. On 
re-inspecting it, I find that the conclusion I originally came to, as to its being a distinct species, is quite 
correct. It belongs to that section of the family, members of which are distinguished by broad culmenal 
marks, a feature more conspicuous in this than in any other species, the greenish yellow colour not being 
confined to the culrnen alone, but occupying a considerable portion of the sides of the upper mandible also: 
the lower part of the breast is fine sulphur-yellow, passing into white on the throat and sides of the neck ; 
the rump is fine sulphur-yellow, instead of passing into orange, as in 11. Cuvieri, R. culminatus, and R. oscu- 
lam ; the bill is thick and swollen, as in the latter; but it is shorter, and on comparison will be found to 
present a different aspect. 
The figures are of the natural size. 
