1. RHEA. o81 



llijhr'id. 



Rhea americana $ X li. macrorhyncha cj', iiclat. P. Z. S. 18t)3, 

 p. 234. 



Alfn)io. 



Ehea americana, Albino variety, Dancm, in Zool. of the 'Beagle,' iii. 



p. 121 (note) (1841). 

 Rhea albescens, Arribalzaya S^- Hulmbery, El Naturalista Aryentino, 



i. (1878) pp. 1-4 (sep. copy) (Carhu^, on Buenos Aires frontier ; 



many examples). 



Also Molina and some recent authors mention white rarieties of 

 R. americana. 



Adult male. General plumage grey ; head blackish above ; neck 

 whitish, with the shafts of the feathers and a band along the nape 

 black ; the band spreads into a broad patch between the shoulders ; 

 base of the neck beneath black, whence arise two black lateral 

 crescents, one on each side of the upper breast ; rump, lower parts, 

 and the feathers of the legs whitish ; secondaries brown on the 

 apical half, some of the inner ones partly or even entirely white : 

 bill and feet yellowish horn-brown ; iris brown. Total length about 

 52 inches, bill from gape 4-5, tarsus 11-12. 



The female is paler than the male. 



Hah. Bolivia aud Matto Grosso, Paraguay, Uruguay, and Argentine 

 Republic ; apparently also Southern E. Brazil. 



a. Ad. St. S. America. Sir Robert Harvey [P.]. 



b- Ad. St. S. .America. John Tyler, Esq. [P"]. 



c, d. PuU. St. S. America. Purchased. 



e,f. Pull. St. S. America. Zool. Soc. 



y. Ad. sk. Argentine Repubhe. II. Durnford, Esq. [C.]. 



h. Skeleton. Rio Grande do Sul. Dr. von Ihering [P.J. 



i. Imperfect skeleton. Purchased. 



k. Imperfect skeleton. Zool. Soc. 



/. Imperfect skeleton Zool. Soc. 



of young bird. 

 SkuU. 



2, Rhea macrorhyncha. 



? Nhandu-guacu brasiliensibus, Marcgr. Hist. Xat. Bras. p. 190 



(1648) ; Piso, Hist. Xat. Bras. p. 84, with tig. (lt]48). 

 ? Struthio camelus auiericanus, Hag, Sgn. Av. p. 36 (1713). 

 ?I{hea, Muehr. At: Gen. p. oo (1752); Briss. Orn. v. p. 8 (syn. 



emend.) (Guiana! and Brazil) (1760). 

 ? Struthio amerieanus, Linn. S. K. (ed. 10) i. p. Lao, n. 3 (America 



Australi) (1758) (e.v Marcgrave and Piso). 

 ? Struthio rheu, Liiin. S. N. (ed. 12) i. p. 260, n. 3 (svn. emend.) 



(1766). 

 ? Tuyew or Emu, Stedman, Xarr. of an E.iiied. to Surinam (Eondon, 



1806). 



