107 
increasing in size on the flanks and lower part of the abdomen, and 
the rufous tint changing into blackish brown; vent buff ; under tail- 
coverts like the abdomen, but the markings less distinct ; bill black ; 
feet black. 
Total length, 8 inches ; bill, 2; wing, 32; tail, 23; tarsi, 1}. 
Hab. Santa Fé de Bogota. 
Nearly allied to O. Sonninz. 
For an additional example of that division of the Ortygide to 
which the subgeneric term of Odontophorus has been given, Mr. 
Gould proposed, from the marbled appearance of its markings, the 
specific term of marmoratus, with the following characters :— 
Ortyx (OponroPrHoRvs) MARMoRATUS. Ort. spatio circumoculari 
nudo, coccineo ; plumis auricularibus rufo-castaneis ; cristd elon- 
gatd, lard, fuscd, plumis singulis flavescenti-fusco per medium 
irroratis; nuchd nigrescenti-fuscd, lineis irroratis cinereis angustis, 
transversim fasciatd; primorum pogoniis externis arenaceo-fulvo 
guttatis ; corpore inferiore fusco, lineis irregularibus et crebris 
nigrescentibus cinereis, et arenaceo-fulvis transversim fasciato. 
Naked orbits, scarlet ; ear-coverts reddish chestnut ; crest length- 
ened, curved and flowing, dark brown, freckled down the middle of 
each feather with yellowish brown; back of the neck biackish brown, 
crossed by numerous narrow freckled bands of grey; lower part of 
the back yellowish brown, freckled with a darker and a lighter tint ; 
wings dark brown, the coverts and inner webs of the secondaries 
crossed by numerous broad irregular freckled bands of sandy buff; 
primaries spotted along their outer webs with light sandy buff; a few 
of the scapularies with a stripe of white freckled with black down 
the centre; under surface brown, crossed by numerous irregular 
narrow bands of blackish brown, grey, and sandy buff; bill and feet 
black. 
Total length, 9 inches; bill, $; wing, 53; tail, 2; tarsi, 14. 
Hab. Santa Fé@le Bogota. 
Nearly allied to Odon. Guianensis. 
And for an Albatross nearly allied to, but larger than, Diomedea 
chlororhyncha, and which also differs from that species in the colour- 
ing of the culmen, he proposed to designate 
DiomepEA cuLtminaTA. Diom. spatio circumoculari nigrescenti- 
cinereo, gradatim pallescente ; facie albd ; vertice corpore subtis et 
uropygio albis; dorso, alis et caudd cinerescenti-fuscis ; culmine 
olivaceo-flavo. 
Space surrounding the eye blackish grey, gradually passing into 
the white of the face ; crown of the head, all the under surface and 
rump white; back of the neck sooty-grey; back, wings and tail 
dark greyish brown, the latter with white shafts; culmen for its 
whole length olive-yellow; base of the under surface of the lower 
mandible fleshy horn-colour, remainder of the bill black; point of 
the upper mandible horn-colour ; feet bluish white. 
