Australian Birds in the Collection of the Linnean Society. 219 



this inequality is owing to the manner in which the skins have 

 been prepared, or whether it is natural, is not for us to deter- 

 mine. The present individual is the only specimen Mr. Caley 

 ever met with : it was much shattered by the contents of his 

 gun. 



Subfam. Cossyphina. 



Genus. Cixclosoma*. 



Rostrum subgracile, subrectum ; culmine rotundato, apice gra- 

 datim leviterque arcuato ; mandibulà superiori apice emar- 

 ginatâ : naribus basalibus, linearibus, membranâ partim tec- 

 tis, setis parce opertis ; rictu parce setis instructo. 



Alœ breves, rotundatai ; remige prima brevi, tertiâ quartâ et 

 quintà fere œqualibus longissimis, secundâ etsextà breviori- 

 bus ; tertian quartœ et quinta; pogoniis externis prope me- 

 dium emarginatis. 



Pedes subelongati, fortes ; acrotarsiis scutellatis, paratarsiis inte- 

 gris ; digitis mediocribus, halluce subforti, ungue subelon- 

 gato, subforti. 



Cauda elongata, gradata, 



The birds of this genus appear to belong to that subdivision of 

 the Thrushes, which by the weaker conformation of the bill opens 

 a passage to the slender-billed Warblers. They deviate very 

 considerably from the typical form of the Merulidcc. Besides 

 the more gracile shape of the bill, the nares may be observed to 

 be linear and longitudinal, instead of being rounded, as in the 

 true Turdi. The wings are short and rounded, the first quill- 

 feather being of moderate length, and the next gradually in- 

 creasing ; they thus diti'er from the wings of Turdus, where the 

 four quill-feathers succeeding the first are nearly of equal length, 



* KtyxXo; turdus, and crco/xa corpus. 



2 F 2 and 



