176 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



the fact that it agrees with the latter iu the rich and nearly i)ure yellow 

 of the back, and large size, although the dimensions are but little 

 greater than those of the largest of the South American series, the wing 

 measuring 3.90 and the tail 3.75 inches. 



In conclusion, assuming that there may be two separable races of this 

 species belonging respectively to Middle America and Fortheru South 

 America, east of the Andes — a i)oint regarding which I must confess 

 myself as not quite satisiied — their synonymy may be arranged as fol- 

 lows: 



Icterus xanthornus. 



CL xanthornus. 



Oriolus mexicanua (part) Linn. S. N. ed. 12, i, 1700, 102, No. 13, but not No. 8, on 

 same page (based on Edw. pi. 243=/. leucopteryx, and Xanthornus mexicanua 

 Bkiss. Oru. ii, pi. 11, fig. 2=tlie present species). — Bodd. Tabl. P. E. 1783, 1 

 (based PI. Enl. No. 5, fig. 1). 



Icterus mexicanus " Briss. " Bonap. Compt. Rend. 1853,835. — Prevost & Lemaire, 

 Ois. Ex. 131, pi. 70, upper fig. 



Oriolus xanthornus Gmel. S. N. i, 1788, 391 {=Oriolus mexicanus No. 13, LiNN.+Pl. 

 Enl. No. 5, fig. 1). 



Icterus xanthornus, Daud. Tr. Orn. ii, 1800 334, (part; includes /. leucopteryx). 



Agelaius xanthornus ViEiLL. Nouv. Diet, xxxiv, 1819, 543 (part). 



Psarcolius xanthornia Wagl. Syst. Av. 1827, No. 15 (first elimination of i. leucopteryx). 



? Icterus xanthornus, var. a. dubusii, Dubois, Bull. Ac. Roy. Belg. ser, 2, xl, Dec. 1875, 

 10 (Isth. Panama). 



Icterus xanthornus, var. fi. marginalis, Dubois, Bull. Ac. Roy. Belg. ser. 2, xl, Dec. 



1875, 17 (Isth. Panama). 

 Icterus auratus Cass. Proc. Philad. Acad. 1807, 50 (Mexico ; spec'n in Nat. Mus. coU.). 



/?. linnoei. 



Agelaius xanthornus Vieill. Nouv. Diet, xxxiv, 1819, 543 (part). 



Xanthornus linnoei Bo^AF. Consp. i, 1850, 434(Cayenne ; "Antilles"; Colombia). 



? Xanthornus nigrogularis Hahn, Vog. pt. v, 1820, 1, pi. 1 ("Mexico") — BoNAP. 

 Compt. Rend. 1853, 835. 



Icterus xanthornus Caban., in Scbomb. Guiana, iii, 1848, 680; Mus. Hein. i, 1851, 

 185 ("Venezuela; Guiana). — Burm., Syst. Ueb. iii, 1856, 269. — Scl., Catal. 

 1861, 133, No. 808 (Trinidad ; Cayenne; New Granada) ; Ibis, 1883, 368 (coast- 

 reg. of Colombia, Venezuela, and Guiana, to the Rio Brancho, Trinidad). — 

 Taylor, Ibis, 1864, 84 (Trinidad).— Cass., Pr. Phil. Ac. 1807, 50 (Venezuela; 

 Trinidad ; Cayenne ; N. Brazil).— Scl. & Salv., P. Z. S. 1868, 167 (Venezuela) ; 

 Nom. Neot. 1873, 30.— Wyatt, Ibis, 1871, 329 (Sta. Marta, N. G.).— Salvin & 

 GODM. Il)is, 1880, 123 (Sta. Marta, Colombia).— Finsch, P. Z. S. 1870, 578 

 Trinidad).— Pelz. Orn. Bras, 1871, 195. 



4. Zeiiaida ruficauda, Bonap. ? 



Or sp. nov. Zcnaida vinaceo-rufa, Ridgw. ? 



An adult female Zenaida (No. 97933, U. S. Nat. Mus.) is perhaps refer- 

 able to Bonaparte's Z. ruficauda (Consp. II, 1854, 83), described as from 



