AVES RHEID^. 



ing, Expl. al Rio Negro, Zool. Aves p. 58 (1881) ; Gibson, Ibis, 

 1885, p. 283 (Uruguay); Gadow, P. Z. S. 1885, PP- 308-322 (an- 

 atomy) ; Beddard, t. c. p. 389 (anatomy) ; Scl. & Huds. Arg. Orn. 

 II. p. 216 (1889); Oust. Miss. Scient. Cap Horn, Ois., p. B. 323 

 (1891); Evans, Ibis, 1891, p. 85 (incubation); Graham Kerr, Ibis 

 1892, p. 151 (Gran Chaco, Rio Pilcomayo) ; Holland, t. c. p. 214 

 (Estancia Espartilla, Buenos Ayres) ; Scl. P. Z. S. 1892, p. 472 (in 

 confinement); Aplin, Ibis, 1894, p. 214 (Uruguay); Salvad. Cat. B. 

 Brit. Mus. XXVII. p. 578 (1895); Sharpe, Hand-list B. I. p. i 

 (1899); Carbajal, La Patagonia, Part II. p. 250 (1900); Pycraft, 

 Trans. Zool. Soc. XV. pp. 154, 155, fig. D (1900); Gates, Cat. Bds. 

 Eggs, Brit. Mus., I. p. i (1901); Mitchell, Trans. Linn. Soc. (2) VIII. 

 p. 182 (1901 : Intestinal tract) ; De Guerne, C. R. Congr. Orn. III. pp. 

 52-61 (1901); Pycraft, Journ. Linn. Soc. Zool. XXVIII. pi. 31, fig. 

 2 (1901) ; Fothergill, Avicult. Mag. VIII. p. 127, pi. E (1902). 



American Rhea, Lath. Syn. Suppl. II. p. 292, pi. 137 (1801). 



CJmri Naudu Avestruz, Azara, Apunt. III. p. 89 (1805). 



RJiea yJiea, Illig. Prodr. p. 247 (181 1). 



Autyuche d' Aineriqiic, d'Ambournay, Prec. anal, des Trav. de I'Acad. 

 roy de Rouen VI. pp. 142-144 (1819). 



Rhea nartdu, Less. Man. d'Orn. II. p. 208 (1828). 



Rhea albescens, Arrib. & Holmb., El Natural. Argent. I. pp. 1-4 (1878: 

 Carhue, Buenos Ayres). 



General description. 



Size.— K^mW. male. F'g. i. 



Total length, about 52 inches. , r-.^?ac,-- 



Bill fi-om gape, 4.5 inches. 

 Tarsus, 11-12 inches. 

 Color. — General color gray. 

 Head : Blackish or dusky above. 

 Neck : Grayish white, the feathers 

 having black shafts. A black or dusky 



band along the nape, which becomes Rhea americana. Profile. }{, natural size. 



a broad patch between the shoulders. 



The under part of the basal portion of the neck is dusky or black, from 



