BIRDS OF NORTH AND MIDDLE AMERICA. 415 
AMIZILIS YUCATANENSIS CHALCONOTA (Oberholser). 
BUFF-BELLIED HUMMING BIRD. 
Similar to A. y. cerviniventris, but under parts of body much paler 
(light cinnamon buff to pale pinkish buff) and green of upper parts 
averaging more bronzy. 
Adult male—Length (skins), 95-105 (100); wing, 52.5-59 (55.8); 
tail, 32-37.5 (34); culmen, 20-21.5 (20.7).¢ 
Adult female.—Length (skins), 91-101 (96); wing, 52.5-55.5 (53); 
tail, 30-35 (32.8); culmen, 20.5-22.5 (21.3).¢ 
Lower Rio Grande Valley in Texas (Ft. Brown; Brownsville), and 
southward into States of Tamaulipas (Tampico; Alta Mira; Xico- 
tencatl; Boque Negro; Victoria; Rio Corono; Sota La Marina; Mata- 
moras; Santa Leonora; Rio de la Cruz) and Nuevo Leén (Saltillo; 
San Pedro Mines), northeastern Mexico. 
Amazilia cervineiventris (not Amazilia cerviniventris Gould) Merrit, Bull. 
Nutt. Orn. Club, ii, 1877, 26 (Ft. Brown, Texas). 
Amazilia cerviniventris BREWER, Ibis, 1878, 116 (Ft. Brown; descr. nest).— 
Cougs and SENNETT, Bull. U. 8. Geol. and Geog. Surv. Terr., iv, no. i, 1878, 
35 (Brownsville, Texas; descr.; habits) —Atien, Bull. Nutt. Orn. Club, v, 
1880, 90 (Ft. Brown).—Ripeway, Nom. N. Am. Birds, 1881, no. 346; Proc. 
U.S. Nat. Mus., iii, 1881, 187, 318, part (Texas); iv, 1881, 25, part (crit.); 
Rep. U. 8. Nat. Mus. for 1890 (1891), 364, part (monogr.; habits).—Covzs, 
Check List, 2d ed., 1882, no. 420.—AmzERicAN ORNITHOLOGISTS’ Unron, 
Check List, 1886, no. 439.—Sautvin, Cat. Birds Brit. Mus., xvi, 1892, 214, 
part (Brownsville; localities in Tamaulipas?).—Satvin and Gopman, Biol. 
Centr.-Am., Aves, ii, 1892, 300, part (Rio Grande Valley; localities in 
Tamaulipas?).—Brnprre, Life Hist. N. Am. Birds, ii, 1895, 225. 
Almazilia] cerviniventris Ripaway, Proc. U. 8. Nat. Mus., iv, 1881, 25, 126 
(diagnosis; crit.); Man. N. Am. Birds, 1887, 317, part.—Cougs, Key N. Am. 
Birds, 2d ed., 1884, 466, part. 
Amazilia yucatanensis (not Trochilus yucatanensis Cabot) Ripaway, Proc. U. 8. 
Nat. Mus., i, 1879, 148, excl. syn. part (Ft. Brown, Texas; descr.); iii, 1880, 
187, 219, 233; Nom. N. Am. Birds, 1881, no. 346.—Merrritt, Proc. U. 8. 
Nat. Mus., i, 1879, 149 (Ft. Brown; habits). 
Amazilia cerviniventris chalconota OBERHOLSER, Auk, xv, Jan., 1898, 32 (“Bee- 
ville’’= Brownsville, Texas; coll. U. 8. Nat. Mus.), 188 (correction of type 
locality)—AMERICAN ORNITHOLOGISTS’ Union Commitren, Auk, xvi, 
1899, 112. 
A[mazilia] cerviniventris chalconota Hartrrt, Das Tierreich, Troch., 1900, 59. 
[Amazilia] chaleconota SHarre, Hand-list, ii, 1900, 108. 
Amizilis cerviniventris chalconota OBERHOLSER, Proc. Ac. Nat. Sci. Phila., June 
2, 1899, 208.—Bartuny (Florence M.), Handb. Birds W. U. 8., 1902, 243.— 
AMERICAN ORNITHOLOGISTS’ Unton, Check List, 3d, ed., 1910, 205.—PHIuLirs, 
Auk, xxviii, 1911, 77 (Alta Mira, Matamoras, Santa Leonora, and Rio de la 
Cruz, Tamaulipas). 
@ Ten specimens. 
