SELENIDERA.—AULACORHAMPHUS. 559 
The first specimen of this fine species was sent to Cassin by Mr. Mitchell from 
Cocuyos de Veragua }, and soon afterwards a pair came into the same writer’s hands from 
the Darien Exploring Expedition under Lieut. Michler?. The latter were procured 
at the falls of the Rio Truando. Since then the species has been gradually traced 
northwards through the Isthmus of Panama to Costa Rica and Eastern Nicaragua, 
where Belt found it during his stay at Chontales, a specimen being included in his 
collection of bird-skins. Mr. Richardson has also recently sent us specimens from the 
same district. 
Little is on record concerning this species; M. Boucard says he found it at Naranjo 
in Costa Rica in small flocks, living chiefly on fruit 1° | 
AULACORHAMPHUS. 
Aulacorhamphus, Gould, P. Z. 8. 1834, p. 147; Scl. Cat. Birds Brit. Mus. xix. p. 153. 
Aulacorhamphus, again, is a genus of very similar structure to Pteroglussus and its 
allies, but the common character of the green plumage of all the species makes the group 
a very homogeneous one. ‘The bill is smaller in proportion than in the other genera of 
Rhamphastide, and the base of the culmen rather more elevated; otherwise there is 
not much structural difference. Aulacorhamphus also has the peculiarity of being an 
upland genus, all the species belonging to the thick forests which cover many tropical 
mountains up to a height of 9000 or 10,000 feet. 
Three of the fourteen known species are found in Mexico and Central America. One 
of them is peculiar to South-western Mexico, one to the eastern mountain-ranges 
of the same country, and thence southwards to Northern Nicaragua, and the third 
to the mountains of Costa Rica and the State of Panama. ‘The southern species are 
found at various stations throughout the Andes from Colombia to Bolivia and in the 
higher mountains of Venezuela and Guiana. 
1. Aulacorhamphus prasinus. 
Pteroglossus prasinus, Licht.in Mus. Berol.* ; Gould, P. Z. 8. 1834, p. 78°; Mon. Rhamph. t. 29°. 
Aulacorhamphus prasinus, Bp. Consp. Av. i. p. 96+; Gould, Mon. Rhamph. ed. 2, t. 47°; Scl. 
P. Z. 8. 1856, p. 808°; 1859, p. 83687; 1864, p.177°; Cat. Birds Brit. Mus. xix. p. 156°; 
Scl. & Salv. Ibis, 1859, p. 185°; P. Z. 8. 1870, p. 837; Sumichrast, La Nat. v. p. 239”; 
Ferrari-Perez, Pr. U. S. Nat. Mus. ix. p. 163"; Salv. & Godm. Ibis, 1892, p. 327 ™. 
Pteroglossus pavoninus, Wag]. Isis, 1829, p. 507”. 
Supra viridis, capite vix obscuriore, uropygio letiore: subtus dilutior, pectore vix cerulescentiore, gula alba, 
tectricibus subalaribus castaneis; cauda supra viride ad apicem cerulescente, subtus nigra, rectricibus 
omnibus castaneo terminatis; rostro viridescenti-lutec, culmine basi et macula infra nares confluente 
sanguineo-nigris, tomia quoque hujus coloris; mandibula nigra; oculorum ambitu castanco; pedibus 
plumbeis. Long. tota circa 14°0, ale 5:0, caude 4°5, rosiri a rictu 3°5, tarsi 1:3. (Descr. maris ex 
Orizaba, Mexico. Mus. nostr.) 
mari similis, sed minor, rostro minore. 
