33 [Vol. xv. 



lower sides of neck yellow ; cheeks and throat pale pink ; 

 region above ear and base of incipient casque emerald-green ; 

 no wattles. 



Obs. — This species cannot be described so fully as could 

 be wished, for the bird died the day after arrival. It is a 

 young bird in brown plumage ; but the colour of the naked 

 parts is quite pronounced enough to distinguish it from all 

 other species of the genus. 



Hab. Unknown. 



Mr. W. Ruskin Butterfield called attention to the 

 terms proposed by Dr. Jonathan D wight, jun., to denote 

 plumages and moults, and made the following remarks : — 



" The terms used to denote particular phases of plumage 

 are often inappropriate and sometimes incorrect. The terms 

 ' summer plumage ' and ' winter plumage,' for example, can 

 only properly be applied to non-tropical birds ; while what 

 is really the second plumage is generally described as the 

 first. In order to afford, in a convenient form, appropriate 

 names, I have devised the following table (p. 34), which shows 

 the derivation of the first nuptial plumage from the natal 

 plumage in probably all Palsearctic birds, except the forms 

 of Lag opus. 



" The terms adopted are mostly identical with, or modi- 

 fications of, those employed by Dr. Jonathan Dwight, jun. 

 (cf. ' Plumage-Cycles and the Relation between Plumages 

 and Moults/ Auk, xix. pp. 248-255; July, 1902). Several 

 differences will be found, however, upon comparing 

 Dr. D wight's table with that here given. In the present 

 table, a moult is always named after the plumage which is 

 shed. Moreover, I have named the plumage (whether 

 simple or compound) which in some species intervenes 

 between the juvenile and the first nuptial, the pre-nuptial 

 plumage ; and the plumage which in some species intervenes 

 between two consecutive nuptial plumages, the post-nuptial 

 plumage. Dr. Dwight calls the former the juveno-non- 

 nuptial, and the latter the adult non-nuptial. 



" The first nuptial plumage is completely shed at the 



