4. PTiLOTis. 223 



than olive, yellow, white, and hrown (with their combinations) in 

 the plumage. Ear-coverts alwa3's difFerentlj' coloured from tlie 

 rest of the head, frequentlj- silkj- grey. P. unicolor is not separable 

 from the genus, except by its uniform dull-brown coloration. Length 

 of wing 2'-i5-4'5 inches. 



Head of Ptilotis sonora. 

 Range. Austro-Malayan, Australian, and Polynesian Regions. 



Key to the Sjjecies. 



a. No pronounced yellow ear-patches ; all the 

 underparts rich yellow, including under sur- 

 face of wing ; upper parts rich greenish yellow JJava, p. 246. 



6. Throat gamboge-yellow ; crown and fore neck 



ashy grey ; mantle dark j-ellowish olive .... Jiavigularis, p. 2.39. 



c. Bright yellow postauricular tufts, followed by 



elongated featliers on sides of neck ; throat 

 ashy browTi, much barred with j'ellow ; upper 

 parts ashy brown fasciogidaris, p. 240. 



d. Ear-coverts pure white ; throat black ; crown 



ashy grey leucofis, p. 240. 



e. Ear-coverts forming a bright orange patch ; 



feathers of underparts bright yellow, with 

 darker centres ; cheeks with dull whitish 



stripes maculatn, p. 232. 



/. With a small, white, postauricidar patch ; ear- 

 coverts yellow ; a black streak through the 

 eye; tinderparts with dull streaks. 

 a'. Crown and mantle earthy brown; upper half 

 of ear-coverts dark grey ; underparts of 

 bodv dingy yellow, with duU whitish , „., , 



streaks .?^... 'ZT'l 23" 



b' . Cheeks, ear-coverts, and rmderparts yellow ; ' '>?•'• 



the latter with dull streaks; upper parts 



brownish olive versicolor, p. 234. 



c' . Cheeks black ; upper parts earthy brown . . chr!/soj)s, p. 230. 

 ff. Ear-coverts and ocular region yellow ; feathers 

 of neck lanceolate ; upper and under parts 



with dusky streaks provocafor, p. 230. 



h. Yellow feathers on sides of head forming a 

 conspicuous patch ; ocidur, or auricular, re- 

 gion bare. 

 d'. Mantle and breast spotted; ocular region 



bare poli/f/raiiiiua, p. 233. 



e'. Mantle and breast not spotted ; ocular re- 

 gion bare ; on hinder corner of eye a few 

 short white feathers; a golden-yellow supra- 

 auricular patch; ear-coverts blackish brown; , /. ^ -,.,1 

 J .' 1 ' frenata, p. 231. 



underparts ashv grey {•' ,j. ' } .-,,., 



t^ • o J suofrenata, p. 231. 



