Genus — D UCORPSIUS. 
Ducorpsius Bonaparte, Comptes Rendus Sci. (Paris) 
Vol. XLIV., p. 537, 1857 . . . . . . . . Type D. ducorpsi. 
Also spelt — 
Diccropsiua Gray, List Spec. Birds Brit. Mus., Part in., Sect. II „ pp. 92-94, 1859. 
Medium-sized Kakatoeine birds with medium bills, long wings, long tail, 
and medium legs and feet. 
The genus is characterised by the nature of the crest, the bare eye space 
of large extent and feathered cere. The bill is quite like that of Kahatoe 
with which genus the present one agrees in coloration. 
It differs in the crest which in this genus is short, the feathers broad 
and full and not recurved. 
The wing formula differs slightly, the first primary being longer than 
the fifth, the intermediates sub equal and longest. 
I am inclined to suggest that further investigation will compel the 
suppression of this genus in favour of Licmetis. As osteological characters 
have been cited in favour of the retention of Licmetis , I have not taken this 
course at present but anticipate that this will eventually ensue. 
\\ 
197 
