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 1 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, h. S ? 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 . d a d. Los Ynglases, Ajo. Nov. 28, 1908. 
h, c. $ ad. „ ,, Dec. 4, 1908. 
d. S ad. „ „ Dec. 18, 1909. 
e . ? ad. Los Yioletas, 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 
