INSESSORES. 215 



be filled up by those naturalists who may hereafter visit the 

 part of the country of which it is a denizen. 



Crown of the head, ear-coverts, and chest black, bounded 

 posteriorly by a narrow band of chestnut ; throat, centre of 

 the abdomen, and under tail-coverts white; flanks, back, 

 shoulders, and external webs of the primaries, secondaries, 

 and wing-coverts grey ; tail, bill, and feet black. 



Sp. 119. PACHYCEPHALA RUFOGULARIS, Gould, 



Red-throated Thickhead. 

 Pachjcephala i-ufogularis, Gould in Proc. of Zool. Soc, part viii. p. 164. 



Pachycephala rufogularis, Gould, Birds of Australia, foL, vol. ii. 

 pi. 70. 



All the examples of this species of Pachycephala I have 

 yet seen, were obtained by myself during my explorations in 

 South Australia, where I found it anything but abundant ; 

 in fact many days frequently elapsed without my procuring a 

 specimen. Its stronghold, probably a part of the vast interior, 

 has yet to be discovered. From the little I saw of it, I am 

 induced to believe that it is a very solitary bird ; for I usually 

 met with only one at a time, hopping about on the ground in 

 the thinly-timbered forest which surrounds the city of Ade- 

 laide; but its actions were so particularly quiet, and its 

 plumage so unattractive, that it might easily be overlooked. 

 I never heard it utter any note, nor did I observe anything in 

 its habits and economy worthy of remark. It doubtless re- 

 sorted to the ground for coleopterous and other insects, the 

 remains of which formed the contents of the stomachs of 

 those I procured. 



The adult males and females differ considerably in the 

 colouring of their plumage; the young males resemble the 

 females. The rusty colouring of the throat and face distin- 

 guishes this species from every other member of the genus. 



The male has the crown of the head and all the upper sur- 



