Genus— C ALYPTORHYNCHUS. 
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Calyptorhynchus Desmarest, Diet. Sci. Nat. (Levrault), 
Vol. XXXIX., pp. 20, 117, Apl. 29, 1826 .. .. Type C. banksii. 
Also spelt — 
Calyptorynchus. 
Calyptorhinchus. 
Calyptorrhynchus Finsch., Die Papageien, Vol. I., p. 329, 1867. 
Banksianus Lesson, Traite d’Ornith., p. 179, 1830 . . Type C. banksii. 
Largest Kakatoeine birds of dark coloration with short massive bills, full 
crest of short rounded feathers, long wings, long tail, and very short legs 
and feet. 
The bill is much deeper than broad : the upper-mandible is short, 
roundly arched with short tip ; culmen ridge rounded with a narrow groove 
down the middle, swollen at the base of mandible but not immediately 
below the culmen ridge. The tip is short, succeeded by deep sinus, followed by 
a rather straight edge. The cere is obsolete at the base of the culmen ridge 
but projects about one-third below to show open circular nostrils, but recedes 
again about the middle, to become obsolete at the edge of the mandible. 
Cere naked, bare eye space and lores practically naked. The under-mandible 
is very swollen, exceeding the upper in width at the base and also at the tip ; 
the latter consists of two teeth with a deep sinus between, and the broad 
rounded face, rapidly retreating, is about half the length of the sides. The 
figures given will show the formation of the bill much better than my 
description. 
The wings are long and rounded with the third primary longest, the 
second longer than the fourth and the first shorter than the fifth but longer 
than the sixth, all six primaries being distinctly scalloped on the inner edge. 
Tail very long and rounded, composed of twelve broad feathers, about 
three-quarters the length of the wing. 
The tarsus is stout but very short, covered with minute reticulate scales : 
toes longer than tarsus and also entirely covered with minute reticulate 
scales ; claws very long and narrow. The preceding is based upon C. banksii , 
the type of the genus Calyptorhynchus. 
In the Catalogue of the Birds in the British Museum, Vol. XX., following 
the conventional interpretation, Salvadori included in the genus Calyptor- 
hynchus seven species, though admitting three of these seemed to be varietal 
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