Ibises of the Genus Theristicus. 511 



Theristicus caudatus lias been confused with T. me/anopis 

 by Wagler, Sclilegel, Elliot, and also by Sclater and Salvin ; 

 but it has been duly recognized as distinct by Berlepsch and 

 Stolzmann, who have succeeded in establishing its specific 

 characters and geographical distribution very clearly. Dr. 

 Sharpe also has recognized T. caudatus as a distinct species, 

 but, having missed Berlepsch and Stolzmann^s excellent 

 notes, he has failed in tracing the geographical distribution^ 

 and consequently the synonymy given by him is not exact. 



I should say that the specimen from Rio Pilcomayo (Cat. 

 13. xxvi. p. 265), where, according to Mr. Graham Kerr, the 

 bird is resident, must belong to T. caudatus and not to 

 T. melanopis*. 



2. Theristicus melanopis. 



Black-faced Ibis Lath. Gen. Syn. iii. pt. 1, p. 108, pi. Ixxix. 

 (New Yearns Island, near Staten Island) (1785) (c/. Forster, 

 Voy. ii. p. 521); id. Gen. Hist. ix. pi. 150. 



Tantalus mdunojns Gm. S. N. i. 2, p. 653, n. 19 (Insula 

 Novi Anni) (1788) ; Lath. Ind. Orn. ii. p. 704, no. 5 (1790). 



Ibis melanopis Vieill. N. D. xvi. p. 20 (1817) (ex Latham) ; 

 Dumont, Diet. Sc. Nat. xxii. p. 427 (1821) ; Vieill. Euc. 

 Meth. iii. p. 1148, pi. 65. f. 2 (1823); Steph. in Shaw, Gen. 

 Zool. xii. 1, p. 12 (1824) ; Drapiez, Diet. Class. H. N. viii. 

 p. 490 (1825) ; Wagl. Syst. Av., gen. Ibis, sp. 17 (part.) 

 (1827) ; Gerbe, Diet. Univ. H. N. vii. p. 7 (part., descr. nee 

 habitat) (1843) ; Des Murs in Gay, Hist, de Chile, i. p. 417 

 (1848) ; Hartl. Naumanuia, 1853, pp. 216, 222 (Valdivia) j 

 Cass, in U. S. Astron. Exped. ii. p. 197 (Chile) (1856) ; 

 Burm. La Plata-Reise, ii. p. 511 (sub /. albicollis) (1861) ; 

 Sohleg. Mus. P.-B., Ibis, p. 7 (part. nos. 1 and 2, Chile) 

 (1863); Scl. P. Z. S. 1867, p. 339 (Chile) ; ScL P. Z. S. 

 1870, p. 665 (Santiago, Zool. Gard.) ; Philippi & Sandb. Cat. 

 Av. Chil. p. 34 (1868) ; Huds. & Scl. P. Z. S. 1872, p. 549 

 (Patagonia); Brehm, J. f . O. 1874, p. 95 (in confinement); 

 Gieb. Thes. Orn. ii. p. 386 (part.) (1875) ; Rchnw. J. f. O. 



* P.S. — Dr. Sharpe now informs me that, as I surmised, the Pilcomayo 

 specimen is T, caudatus. 



