H- 



88 Mr. W. R. Ogilvie-Grant on Birds 



brilliantly coloured and resemble the adult male : in those 

 the sex has almost certainly been wrongly determined by the 

 Dyak collector. 



Young males resemble the female. 



The male is rather larger than the female : wing 64-67 mm. 

 as compared with 63 mm. 



"The Yellow and Grey Thick-head was only observed in 

 the mountains, where it was tolerably common around my 

 hi<i,hest camp on the Iwaka River. One pair were seen at 

 Yv^hite Water Gamp, near the pygmy village ; but though both 

 birds were secured, one skin seems to have been subsequently 

 lost. 



"This bird was always observed in pairs, and frequented 

 the lower branches of the larger trees. If one was shot, 

 the othar remained about calling softly for its mate."— 

 C. H. B. G. 



*Eulacestoma nigropectus. 



Eulacestoma nigropedus De Vis ; Sclater, Ibis, 1904, 

 p. 373, pi. ix. ; Roths. & Hartert, N. Z. xx. p. 510 (1913). 



Recorded from Mt. Goliath, where several specimens were 

 collected by A. S. Meek. 



Pachycephala soror klossi, subsp. n. 



There seem to be three well-marked races of this species: — 



1. Typical form from Arfak. (Pachycephala soror Sclater.) 

 Pachycephala soror Sclater; Gadow, Cat. viii. p. 196 



(1883) ; Roths. & Harteri, N. Z. x. p. 103 (1903) [part. 

 Arfak]. 



Male. Tail with the terminal third and the basal two-thirds 

 along the shaft black, margined with olive-green. 



Female. Back olive-brown inclining to reddish-olive. 



2. Form from the Utakwa Valley. (P. soror klossi, 

 subsp. n.) 



Pachycephala soror Roths. & Hartert (nee Sclater), N. Z. 

 XX. p. 508 (1913). 



Male. Tail quite black, with sometimes a trace of dlive- 

 green edges at the extreme base of the feathers. 



Female. Back dark olive-green. 



