550 BIRDS OF AUSTRALIA. 



smaller branches of which it may constantly be seen hanging 

 and clinging in every possible variety of attitude. 



The adult has the whole of the upper surface, wings, and 

 tail light brown ; all the under surface pale greyish brown ; 

 bill and legs leaden olive ; irides and eyelash nearly black ; 

 naked part of the face mealy bluish lead-colour. 



Total length lOj inches; bill 1^; wing 5 J; tail 4 J; tarsi 1|-. 



The young are similar to the adult, but have the feathers 

 of the upper surface fringed with grey, and those of the wings 

 slightly margined with greenish yellow ; the throat and sides 

 of the chest lemon-yellow ; face blackish, and not so mealy as 

 in the adult. 



Sp. 338. TROPIDORHYNCHUS SORDIDUS, Gould. 

 Sordid Friar Bird. 



Ar-dulk and Wul-loo-rat ? Aborigines of Port Essington. 

 Leather-neck of the Colonists of Port Essington. 



Tropidorhyiicus sordidus, Gould, Birds of Australia, foL, vol. i. 

 Introd., p. Iviii. 



This species inhabits the Cobourg Peninsula, and is very 

 similar to T. citreogularis, but is smaller in all its admeasm-e- 

 ments except in the bill, which is more developed. 



Gilbert informed me that its habits and manners are pre- 

 cisely similar to those of T. argenticeps, but that it is less 

 abundant, less active, and has not so deep a voice as that 

 species. 



The young has the yellow colouring of the throat still more 

 extensive than in immature examples of T. citreogularis. 



Genus ACANTHORHYNCHUS, Gould. 



This genus, like many others of the family, may be regarded 

 as strictly Australian : it comprises two, if not three, well- 



