BIRDS. 57 



black ; breast and flanks olive brown ; centre of the abdomen and under 



tail-coverts, buff; bill, horn colour ; feet, black. 

 Habitat, Santa Cruz, Patagonia. (April.) 



I am not aware of any difference in habits between this species, and the fol- 

 lowing (A. micropterus) ; and the country inhabited by it is similar. From these 

 circumstances I am induced to suspect, that it is the same species in an immature 

 state. 



3. Ageiornis micropterus. Gould. 



Plate XII. 

 M.pallidebrunneus, subtusflavescenti-albus; alarum caudteque plumis griseo-margina- 



tis ; gutturis albis, brunneo-marginatis. 

 Long. tot. 9 T \ unc. ; alee, 4-J ; caudw, 2-J ; tarsi, 1-fa ; rostri, If. 



Head, all the upper surface, wings and tail, pale brown, each feather of the wings 

 and tail margined with greyish brown ; throat, white, striated with dark 

 brown ; the remainder of the under surface, buffy white ; bill, dark horn 

 colour ; feet brown. 

 Habitat, Port Desire, and St. Julian, Patagonia. (January). 

 These birds frequent the wild valleys in which a few thickets grow. They 

 generally take their stand on the upper twigs. They are shy, solitary, and not 

 numerous. Mr. G. R. Gray considers the two specimens which were obtained 

 to be immature, and that one is a full-fledged young, and the other a nestling 

 of the Agr. striatus. 



4. Agriornis maritimus. G. R. Gray. 



Plate XIII. 



Pepoaza maritima, D'Orb. et Lefr., Mag. de Zool. 1837, p. 65. 

 Agriornis leucurus. Gould's MSS., and on PL xiii. 



Inhabits the coast of Patagonia. It is a scarce, shy, solitary bird, frequent- 

 ing the valleys in which thickets grow, but often feeding on the ground. In the 

 interior plains of Patagonia, on the banks of the Santa Cruz, I several times saw it 

 chasing beetles on the wing, in a peculiar manner, half hopping and half flying ; 

 when thus employed, it spreads its tail, and the white feathers in it are displayed 

 in a very conspicuous manner. I also met with this species in the lofty and arid 

 valleys on the eastern side of the Cordillera of Central Chile, and likewise at 

 Copiapo. 



