IBIDID.E — THE IBISES — PLEGADIS. 



97 



Plegadis guarauna. 



THE WHITE-FACED OLOSST IBIS. 



? Scolojxix auarauna, Linn. S. N. I. 1700, 242, no. 1 (based on Xumcnius amcricanns f incus, Buiss. 



Av. 5, p. 330. — Criiarauiut, Makioii. Hms. 204). 

 Fidcincll us ijuimiuiw, BoxAi'. Consj). II. 1855, luit. — Kli.iot, P. Z. S. 1877, 505. 

 Ibis ijutimuna, Waol. Syst. Av. 1827, sp. 8. — Cass, in Baird's B. N. Am. ej. 1860, pi. 87, 



(yomif,'). — UiiHiw. Am. Nat. 1874, 110, 111 (eriticnl). 

 I'hijudis ijuaniuna, HiDOW. Noni. X. Am. 15. 1881, no. 504. — CoUEs, Cheek List, 2J cd. 1882, 



no. 050. 

 (I. Mexican [bis, Latii. Synop. III. i. 1785, 108, no. 5. 

 ?/ Tantalus nuxieanus, Omki,. S. N'. I. ii. 1788, 652 (based on N^umcnius mexicanus varius, Bkis.s. 



Av. 5, p. 333, no. 7). 

 " lliis/alcincllus" (most (juotations from South America). 

 " //</,v On/(( "((jiiotations lioni Mexico, Central and South America). — Cass, in Baird's B. N. Am. 



1858, 085 (exil. synonymy). 

 Tantalus chalcoptcms, Tkm.M. PI. Col. 511 (1830), (adult). 

 "Fiikinclhis if/ntus," Sii,. & Sai.v. Noni. Ncotr. 1873, 120 (part). 

 i Ibis iriifhmrhi/nchus, (ioi'i.i), P. Z. s. Xov. 14, 1837, 127 (Hayti ; young?). 

 Ibin tliahtssinus, IJiDcw. Am. Nat. VIII. Fi'b. 1S74, 110, 111 (young in first plumage). 

 Falcincllus thalassiuHS, ELLiur, l*. Z. .s. 1877, 507. 



Hab. AW'steni United Status, Middle Aiuericii, and South America, to Chili and Buenos 

 Avres, West Indies ( .Saiidwieli Islands f 



Sp. Char. Adult : Fmthcrs hordurimj the base of the hill, all round, whitish, usually most distinct 

 on the forehead. Pileum dull metallic vi(jlet-j>urple, changing,' to green, tlie feathers blackish 

 beneath the surface ; rest of the head ciiinamon-browiiisli, paler on the throat, where lightest 

 anteiiorly ; neck cinnamon-chestnut, the feathers bhickisli beneath the surface, this showing where 

 the feathers are disarianged, and i^uite conspicuous on the najie, where the dusky ha.s, in certain 

 lights, a faint greenish lustre. Lower neck, entire lower jjarts (except the crissum, anal region, 

 .ixdlurs, and flanks), back, anterior scai)nlars, and lesser wing-coverts uniform rich chestnut, darker 



and more purplish above, lighter and more ferruginous or clearer reddish beneath. Rest of the 

 phunage glossy metallic green, bronze, nuride, and violet; the green purest and cleare.st on the 

 primaries ; the secondaries and greatt verts more bronzy, the middle coverts and posterior half 

 of lesser covert region purplish, changing to dull green ; the crissum and rump mi.xed green and 

 purple, the green being of a richer, almost grass-green, shade, especially on the rump. Axillars and 

 under wing-coverts bronze-purple ; under-surface of remiges and rectrices very higldy burnished. 

 Bill dusky, sometimes tinged with reddisli ; lores, eyelids, and naked skin of chin lake-red or 

 pale carmine ; iris crimson ; legs and feet varying from grayish brown to deep lake-red. 



Youmj, second year: Heail, neck, and lower jiarts dull grayish brown, the head and upi>er part 

 of the neck streaked with white ; back grayish brown with green or imrple reflections. Otherwise 

 as in the adult, but metallic colors less brilliant. 



VOL. I, ^ — 13 



