393 Mr. E. Gibson on the Ornithology of [Ibis, 



Sometimes they are cup-shaped and compactly built, occa- 

 sionally slighter. The material is invariably the same — dry 

 strips of the flags or a certain other water-grass_, lined with 

 finer filaments of the same. I have only once found four 

 eggs, the normal clutch being three. The ground-colour is 

 a pale buff or a white with a pinkish glow, boldly spotted 

 and streaked at the blunt end with a rich dark brown, 

 almost appro;iching black. Measurements : 22 x 17 ram. 



98. Agelaeus flavus (Gm.). Yellow-headed Marsh-bird. 



This is a curiously irregular visitor to our district. First 

 observed in 1875, 1 recorded it every subsequent year to 

 (and inclusive of) 1882. Since then, I am not aware of 

 having seen it again. At the risk of being prolix, the 

 following are the detailed appearances : — 



1875. Nov. 30. Pair seen in a thistle-bed. 



1876. July 27. Flock of seven or eight on the campo. 

 Oct. 5. Three on campo. 



1877. June 4. Three or four on campo, in company with 



P. virescens. 

 Oct. 1 . A flock seen on campo, in company with 

 T. defilippii. 



1879. Sept. 20. Flock of twenty to thirty on campo. 

 Nov. 20. A kw in thistle-bed. 



Nov. 22. Two flocks seen — one in thistle-bed, other 



on campo. 



Nov. 28. Some seen in township of Ajo. 



Nov. 30. Two in a thistle-bed. 



Dec. 7. Some in township. 



Dec. 20. As above, and also on campo. 



1880. Aug. 1. One seen on campo, in company with some 



Plovers ! 



1881. Oct, 9. Flock of eight on campo. 

 Oct. 10. Same flock seen again. 



Oct. 21'. Two or three again, in above locality. 



1882. June 10. Two seen near township, in company with 



P. virescens. 

 Those seen in the thistle-beds in 1879 gave me the 



