Paraguay, Bolivia, and Southern Brazil. 341 



observed everywhere on the Rio Parana and Rio Paraguay. 

 In the Ajo district it apparently does not breed, and the 

 majority disappear for a short time between September and 

 January^ the few that remain being probably immature. I 

 was told that it breeds plentifully at Tandil to the southward, 

 but I was unable to authenticate this. 



The habits have been too well described by Hudson to 

 need further notes. 



206. Phimosus infuscatus. 



Phimosus infuscatus Sharpe, Cat. B. xxvi. p. 26 ; Arg. Orn. 

 ii. p. 113. 



a, b. (J ? ad. Santa Rosa, Paraguay. Aug. 14, 1909. 



Irides brown; bare skin on head pink-flesh-coloured ; bill, 

 legs and toes ashy brown. 



Flocks of this Ibis were observed on the river expedition, 

 and on one occasion I dropped nine with one shot, 



207. Ajaja rosea. 



Ajaja ajaja Sharpe, Cat. B. xxvi. p. 52. 

 Ajaja rosea Arg. Orn. ii. p. 114. 



a. <i ad. Los Ynglascs, Ajo. Nov. 28, 1908. 



b, c. ? ad. „ „ Dec. 4, 1908. 

 iL S ad. „ „ Dec. 18, 1909. 



e. $ ad. Los Violetas, Monsalvo. Jan. 30, 1910. 



/. ? ad. Tebicuari, Paraguay. Aug. 8, 1909. 



The November bird is in full breeding-dress. 



Irides red ; lores and orbits yellow-ochre ; bare part of 

 head from forehead to crown pale Naples-yellow ; occiput 

 and below ear sooty-black ; around orifice of ear pale Naples- 

 yellow ; skin of chin and throat admixture of pale Naples- 

 yellow and yellow-ochre ; bill clear ashy, somewhat sooty 

 between corrugations at base; legs dull crimson-lake, feet 

 sooty-black. 



The August bird is moulting into the summer plumage^ 

 and the January one is moulting into the winter dress. 



The soft parts are as above, except that there is no black 

 on the occiput. 



It has not, I think, been noticed before that the feathering 



