INSESSORES. 197 



Graucalus melanops. It is abundant in every part of the Co- 

 bourg Peninsula, and is generally seen in small families of 

 from four to ten or twelve in number. 



The whiteness of the under surface serves to distinguish 

 this from all the other species of the genus yet discovered in 

 Australia. 



The stomach is muscular, and the food consists of insects 

 of various genera, which are generally taken from the leafy 

 branches of the highest trees. 



The sexes assimilate very closely in colouring, and only 

 differ in the females and young males having the lores of a 

 dull brown instead of black. 



Lores black ; crown of the head and all the upper surface 

 dark grey ; wings and tail black ; chin, under surface of the 

 wings, abdomen, and under tail-coverts white ; breast pale 

 greyish white ; irides brownish black ; bill blackish brown ; 

 legs and feet black ; insides of the feet and spaces between 

 the scales of the tarsi mealy grey. 



Sp. 107. GRAUCALUS SWAINSONII, Gould. 



Swainson's Graucalus. 



Ceblepyris lineatus, Swains, in Zool. Journ., vol. i. p. 466. 

 Graucalus Swainsonii, Gould in Syn. Birds of Australia, part iv. 



Graucalus Swainsonii, Gould, Birds of Australia, fol., vol. ii. pi. 58. 



This species of Graucalus, which is distinguished from all 

 the other Australian members of the genus by the beautiful 

 barring of the breast, was originally described by Swainson 

 under the specific appellation of lineatus; but that term 

 having been previously applied to another species of the 

 group, it became necessary to change it ; and in substituting 

 that of Swainsonii, I was desirous of paying a just tribute to 

 the talents of a gentleman who has laboured most zealously 

 in the cause of natural science, and whose researches and 

 writings are so well known to all ornithologists. 



