100 Mr. W. R. Ogilvie-arant on Birds 



a-c. S ? . Oamp 6 A, Ut-.akwa River, 2900 ft., 9th & 

 12th Jan. 1913. [C.B.K.'] 



These birds must be typical examples of P. dicliroiis 

 (Bonap.), the type of which was procured by S. Miiller at 

 Lobo, Triton Bay. They do not differ iu any way from 

 examples met with in iSoiith-east New Gruinea, including the 

 Aroa River, and the name P. d. monticola Roths, must there- 

 fore be added to the synonymy. 



Sharpe [Cat. iii. p. 284 (1877)] made the mistake of 

 uniting P. dicliroiis (Bonap.) with P. cirrlioceplialus (Lesson) ; 

 the latter, the type of which came from Dorei, Greelvink 

 Bay, is a distinct and much larger species. In P. dichrous^ 

 the plumage of the sexes is alike, both having the head and 

 fore-neck black, while in the much larger and stronger- 

 billed P. cirrJiocephalus both sexes have the head and fore- 

 neck of a soiled grey colour. 



P. dohertp Roths- & Hartert[N. Z. x. p. 95 (1903)], 

 described from Ron I., Geelvink Bay, is close to P. dichrous, 

 but laroer : wing 127-130 mm. as compared with 105 mm. 

 The British Museum possesses one male specimen from 

 Inviorage, procured by A. B. Meyer, which agrees exactly 

 with the description of P.dohertyi and has the head, -throat, 

 and fore-neck quite black. According to Salvador! [0. P. 

 ii. p. 197 (1881)], the species found at Inviorage is his 

 P. decipiens, which has the head dark grey or almost black. 

 It seems probable that these two forms may be phases of the 

 same species. 



Among the birds collected by Mr. Goodfellow at Sekar, 

 North-west New Guinea, there is an immature male example 

 probably referable to P. decipiens, but with the head, throat, 

 and fore-neck dark grey, instead of brownish-grey, the tail 

 black, and the wings slightly washed with olive on the outer 

 webs of the secondaries. 



These three species are distinguished from the allied forms 

 of the group, by having the rump and upper tail-coverts 

 chestnut like the back. 



A male bird procured at Humboldt Bay by Mr. W. Good- 

 fellow differs slightly from typical P. diehrous in having the 



