The fifth section contains the Hill Toucans, forming iny genus
A N D IG E N A ,
WITH THE FOLLOWING CHARACTERS
Roslmm tnrgidum, magnum, attamen minus qnam in gehe re re s tric to Pteroglosnu dioto. A l x e t u t in genere
Aulacorampho nominato. Ptikima elongatum, laxum, capillaceum.
BUI s to u t an d swoUen, b u t n o t so la rg e as in th e tru e Plerogloui; m«g> and tail very simUar to th o s e o f Aulaco-
ramphus; general plumage long, loose, an d hair-like .
It has been found that even the higher ranges of the Andes are not untenanted by the Toucans;
Professor Jameson of Quito informs me that the A . lammirostris even ascends the sides of Pichincha to an
elevation of from six to ten thousand feet. The members of this genns extend all along the Andes and the
Cordilleras, from the Caraccas to Bolivia, where Mr. Bridges found a species in the forests of Cocapata, in
the department of Cochabamba ; one species, however, thzA . Bailloni, appears never to quit the lowlands of
Brazil. These Hill Toucans have stout hard bills, are very thickly clothed, and have the under surface
generally of a uniform and delicate colour.
The species a r e -
37. Andigena laminirostris
38. — hypoglaucus
39. ------------ nigrirostris
40. ------------- cucullatus
41. ------------ Bailloni
PI. XXXVII.
PI. XXXVIII.
PI. XXXIX.
PI. XL.
PI. XLI.
The sixth and last section comprises a series of birds remarkable for some of the species having the
sides of their bills deeply grooved ; they form my genus
A U L A C O R AM PH U S ,
WITH THE FOLLOWING CHARACTERS
Rostrum, comparative breve, latum, ad culmen d e p re s sum ; ap u d la te ra su lc a tum ; mandibuld mferiore ad basin
oblique u ltra oculi lineam te n d e n te ; alee breves e t rotundatae, remige q u a rtd longissimd, q u intd, sext&, e t
septimd in te r se fere coaequalibus; cauda, paululum brevis, e t minus g ra d ata quam in genere Pteroglosso
nominato.
B ill comparatively sh o rt, b ro a d and flattened on th e cu lm en ; furrowed on th e sides, and w ith th e base o f the
u n d e r mandible extending obliquely beyond th e line o f th e e y e ; wings sh o rt and ro und, th e fourth quill the
longest, th e fifth, s ix th and seventh being n ea rly o f equal le n g th ; tail comparatively sh o rt, and n o t so
decidedly g ra d u ated as in th e tru e Pteroglossi.
This may be considered an Andean group, for it is among those lofty mountain ranges that nearly all
the species are found. They are dispersed over all parts of the temperate regions, from Bolivia on the
south to Mexico on the north. They possess characters common to each other; their plumage is nearly
of a uniform green, and the sexes are precisely alike in colour.
The species are—
42. Aulacoramphus sulcatus . . . . . . . PI. XLII.
43. -------------------- D e r b i a n u s ............................................... PI. XLI1I.
44. -------------------- castaneorhynchus . . . . . PI. XLIV.
45. -------------------- h s em a to p y g iu s PI. XLV.
46. -------------------- caeruleocinctus . . . . . PI. XLVI.
47. -------------------- prasinus . . . . . PI. XLVII.
48. --------------------W a g l e r i ............................................................ PI. XLVIII.
49. -------------------- a l b i v i t t a ............................................................ PI. XLIX.
50. -------------------- atrogularis . . . . . . PI. L.
51. -------------------- cseruleogularis . . . . . P). LI.
Since the above was in type, Prince Charles Luoien Bonaparte has sent me a portion of his remarks
on the Birds brought by the late M. De Lattre from Nicaragua, in which I find in a note at page 84 he
proposes- a still further division of this family: first, R a r ip h o m e l u s for the Andigena nigrirostris; next,
R a m p h o x a n t h u s for the Aulacoramphus prasinus, A . albivitta, See.; and P ip e r iv o r u s for Selenidera piperivora,
Pteroglossus viridis, Andigena Bailloni, Pteroglossus inscriptus, &c.
As regards Ramphomelus, I think any further subdivision of the Hill Toucans inadmissible : the bird
upon which the Prince proposes to establish the genus has all the characters common to the other members
of the section, with the exception of the black colouring of the beak, which surely must be regarded rather
as a specific than as a generic distinction.