( 78 ) 



? Vokaii, Am Islands (Beccari), cnlmen, 85 mm. ; wiug, 310 mm. 



? Vokan, Arn Islands (Kiihn), 83 mm. ; wing in moult. 



d Vokan, Aru Islands (Beccari), culmen, 95 mm. ; wing, 325 mm, 



? Vokan, Am Islands (Kiihn), cnlmen, 86 mm. ; wing monlting. 



One Wanoembai (Webster), culmen, 95 mm. ; wing, 334 mm. 



? Trangan (Kiihn), cnlmen, 85 mm. ; wing, 315 mm. 



One no locality, but evidently Western Papuan Islands (Bruijn), culmen, 

 86 mm. ; wing, 320 mm. 



One no locality, but evidently Western Papuan Islands (Bruijn;, cnlmen, 

 85 mm. ; wing, 350 mm. 



Cnlmen, 85 — 95 mm. ; wing, 310 — 350 mm. Males are evidently larger than 

 females. 



The fact that both Aru and the Western Papuan Islands have a smaller race 

 in common is an interesting parallel to the distribution of Cacatua triton triton 

 and Cacatua triton macrolopha. Kiihn describes the iris as coffee-brown, bare skin 

 of face carmine-red, bill and feet black. 



61. Cacatua triton triton (Temm.). 



The only white Cockatoo we know from New Guinea proper is the typical 

 triton. We have received the following specimens : — 



(J? Ron, July 1S9T (the labels are perhaps by mistake interchanged, as the 

 bird labelled ? is larger than the supposed S). 



¥ ad. Kapaur (Doherty). 



$ ad. Takar (Doherty). " Iris dark brown, feet black, eyelids bluish white," 



One Hatam (Bruijn's hunters). 



One Dorey (Bruijn's hunters). 



Two Ansus, Jobi (Doherty). S iris " bright crimson " (sic I), ? " rich 

 chestnut" (I) ; bill and feet "blackish." 



One Stephansort, ? 13.12.1899 (N3'man). A very large bird. 



One German New Guinea (Cotton & Webster). 



One $ Konstantinhafen (Kubary coll.). 



One Aroa River, British New Guinea (Weiske coll.). 



Three Goram-laut (Kiihn coll.). 



Two Ceram-laut (Kiihn coll.). 



All these birds agree in being very large, with powerful beaks and long wings. 

 It is most peculiar to find typical triton on the South-East Islands. 



C. galerita of Australia differs at first sight from triton by the more pointed, 

 strongly laterally incurved and more recurved feathers of the crest. This is a much 

 better character to distinguish dried skins by, than the colour of the naked skin 

 round the eyes, which vanishes when the bird dries. 



52. Cacatua triton macrolopha (Roseub.). 



Four adnlt birds from Mysol (3 Kiihn, 1 Guillemard coll,), and three from 

 Aru (Dobbo and Kobroor, Kiihn coll.), agree with each other and differ from 

 typical triton, in being smaller, the wings being at least an inch shorter, the bills 

 less powerfal. Kiihn has marked the iris of four specimens as dark brown, that 

 of two as red. 



This form, which inhabits also Salwatty and Waigiu, must certainly be 

 recognised, although Count Salvadori and other authorities have denied its validity. 



