of the Lower Pilcomayo. 151 



were obtained along the margins of the river or of salt-water 

 pools, chiefly about Fortin Page, and during the winter and 

 spring months. 



-^165. Tringa maculata. {Op.cit. ii. p. 183.) 

 Fortin Page. 



^166. Tringa fuscicollis. (^Op.cit. ii. p. 185.) 

 (No. 195, S •) Pilcomayo. 



/ 167. ToTANUs MELANOLEUcus. {Op. cit. ii. p. 186.) 

 (No. 200, S •) Fortin Page. September 30th, 1890. 



-|-168. ToTANus FLAViPES. {Of. cit. ii. p. 187.) 

 (No. 193, S-) Fortin Page. September 13th, 1890. 



169. Rhyacophilus solitarius. {Op. cit. ii. p. 188.) 

 (Nos. 192, 194, ? .) Fortin Page. September 13th, 1890. 



170. PODICEPS ROLLANDI. ( 0/j. d/. ii. p. 204.) 

 Uncommon. 



171. PODILYMBUS PODICEPS. {Op. Cit. ii. p. 206.) 



(No. 212.) Near Fortin Page. December 10th, 1890.) 



172. Rhynchotus rufescens. {Op.cit. ii. p. 209.) 



The plaintive whistle of this bird was often heard during 

 spring, and one or two specimens were got from the Indians. 



173. Crypturus undulatus (Temm.). 



Only in the thick forests adjoining the Paraguay. 



[The single skin of a Tinamoo brought home by Mr. Kerr 

 appears to be an immature specimen of Crypturus undulatus, 

 a species which was met with in Paraguay by Azara, and by 

 Natterer in Matto Grosso. It is new to the Argentine list. 

 —P. L. S.] 



174. Rhea Americana. {Op.cit. ii. p. 216.) 

 Guarani, "Nandu''; Toba, "Mauik." 



Very numerous in the Gran Chaco, but very shy and 

 wary, owing to the constant persecution it undergoes from 

 the Indians. It frequents open ground, especially where 

 there are scattered bushes. The young have a long-drawn 



