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Genus XII.— CORYTHUS, Cuv. PINE-FINCH. 
Bill short, robust, bulging at the base, conical, acute ; upper mandible of 
the same breadth as the lower, with its dorsal line very convex, the nasal 
sinus semicircular, the sides convex, the edges sharp, overlapping, gently 
ascending at the base, then arched, with a slight festoon, the notches 
obsolete, the tip declinate, acute ; lower mandible with the angle semi- 
circular, the dorsal line slightly convex, the back rounded at the base, the 
sides convex, the edges somewhat inflected, the tip obtuse. Nostrils basal, 
round, concealed by bristly feathers. Plead large, roundish-ovate ; neck 
short ; body moderately stout ; feet short ; tarsus short, compressed, with 
seven scutella ; toes stout, the first proportionally large, the lateral nearly 
equal, the outer adherent at the base. Claws long, moderately arched, 
compressed, acute, that of the third toe longer than that of the first. 
Plumage soft, full, rather blended ; two tufts of bristly feathers at the base 
of the upper mandible directed forwards. Wings of moderate length, 
pointed, the first, second, and third, nearly equal. Tail rather long, deeply 
emarginate. Roof of the mouth concave, with five prominent ridges ; 
tongue deeper than broad, in its distal half oblong, concave, obtuse, and 
horny ; oesophagus dilated about the middle ; stomach large, muscular, 
with the lateral muscles distinct, and the epithelium rugous, intestine long, 
and rather slender ; coeca very small ; cloaca oblong. 
