AULACORAMPHUS CASTANEORHYNCHUS, Goutd. 
Chestnut-billed Groove-bill. 
Specific Character. 
Aid. vostro castaneo-rubro; mandibula inferiore in medio , et culmine nisi ad basin nigro undu- 
latis; vittd basali stramined; uropygio coccineo; corpore subtus viridi; pectore av video 
tincto ; candce rectricibus quatuor intermediis ad apicem late castaneis. 
Crown of the head and upper surface brownish green ; wings dark green ; rump crimson ; 
four middle tail-feathers deep bluish green, largely tipped with chestnut-brown, the re¬ 
mainder green ; all the under surface green, stained across the breast with light blue; bill 
chestnut-red, becoming paler towards the point, clouded with black on the middle of the 
lower mandible and along the culmen, except at the base : at the base of the bill is a band 
of straw-white, which increases in breadth as it proceeds downwards. 
Total length, 19 inches; bill, 4h; wing, 5f; tail, 7h; tarsi, 1:1. 
Pteroglossus (Aidacovhynchits) castaneovhynchus, Gould in Ann, & Mag. of Nat. Hist., vol. ix. 
p. 238. 
Of the grass-green Toucans to which the generic term of Aulacorhynchus has been applied, the present 
species is by far the largest yet discovered. The accompanying figures were drawn from specimens in my 
own possession, which are somewhat smaller than those in the fine collection formed by the late Earl of 
Derby. The Aulacorhynchus castaneovhynchus is nearly allied to A. hcematopygius , but the diminutive size 
of the latter, together with the darker colouring of the apical half of its bill, indicates its specific di¬ 
stinctness. 
The present species appears to be strictly an Andean species, all the specimens I have seen having 
been sent to Europe in collections from Santa Fe de Bogota. I regret to add that nothing more is known 
respecting it. 
The figures are of the natural size. 
