414 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
AMIZILIS YUCATANENSIS CERVINIVENTRIS (Gould). 
FAWN-BREASTED HUMMING BIRD. 
Similar to A. y. yucatanensis, but under parts of body, under tail- 
coverts, etc., paler cinnamon-rufous or nearly vinaceous-cinnamon 
(less pinkish, however, than the latter color) and sides glossed or 
spotted with metallic bronze-green or greenish bronze; slightly larger 
(except bill). 
Adult male-—Length (skins), 98-104 (101); wing, 51.5-57 (55.2); 
tail, 30.5-37 (34.6); culmen, 20-21.5 (20.6).¢ 
Adult female.—Length (skins), 91-104 (97); wing, 52-55 (53.4); 
tail, 31-34 (32.7); culmen, 20-21.5 (21).® 
Southeastern Mexico, in States of southern Tamaulipas (Hidalgo; 
Tampico?; Alta Mira?; Presas de Aldama?; Tantina?), San Luis 
Potosi (Valles) ?, Puebla (Metlaltoyuca), Vera Cruz (Cérdova; Tos- 
pam, near Cordova; Tomatla; Sochiapa; Jalapa; San Andrés Tuxtla; 
Tlalcotalpam; Coatzocoalcos; Laguna; Catemaco; Misantla; Colipa; 
Vega de Casadero; Xochiapa), and Chiapas (Ocozucuantla) ? 
Amazilius cerviniventris GouLp, Proc. Zool. Soc. Lond., Nov. 11, 1856, 150 (Cér- 
dova, Vera Cruz; coll. J. Gould).—Sctater, Proc. Zool. Soc. Lond., 1856, 
287 (near Cérdova). 
Amazilia cerviniventris GouLp, Mon. Troch., pt. xiii, May, 1857 (vol. v, 1861), 
pl. 309.—Scrater, Cat. Am. Birds, 1862, 314 (Tlalcotalp4m, Vera Cruz).— 
Mutsant and VrerrEavxX, Classif. Troch., 1866, 35; Hist. Nat. Ois.-Mouch., 
i, livr. 4, 1874, 296; iv, livr. 3, 1878, 182.—D’Oca, La Naturaleza, iii, 1875, 
209; Troq. de Mex., 1875, 51, pl. (11), fig. 39.—Sazvin, Cat. Birds Brit. 
Mus., xvi, 1892, 214, part (except specimens from Brownsville, Texas).— 
SALvIN and GopMAN, Biol. Centr.-Am., Aves, ii, 1892, 300 (except Texas 
specimens).—Boucarp, Gen. Hum. Birds, 1895, 197 (Tosp4m, near Cér- 
dova, Vera Cruz). 
[Amazilia] cerviniveniris SctatER and Satvin, Nom. Av. Neotr., 1873, 92.— 
Mutsant, Ann, Soc. Linn, Lyon, xxii, 1876, 209.—SHarpz, Hand-list, ii, 
1900, 108. 
Plyrrhophaena] cerviniventris CaBanis and Herne, Mus. Hein., iii, 1860, 36, 
footnote (Cérdova). 
Pyrrhophzxna cerviniventris Gouin, Introd. Troch., oct. ed., 1861, 157. 
Efranna] cerviniventris Herne, Journ, fiir Orn., 1863, 187 (Cérdova). 
[Eranna] cerviniventris HeIne and Reicurnow, Nom. Mus. Hein. Orn., 1890, 179 
(s. Mexico). 
[Polytmus] cerviniventris Gray, Hand-list, i, 1869, 132, no. 1079. 
Amazilis cerviniventris Eupes-DEsLtonecuames, Ann. Mus. Caen, i, 1880, 404. 
Amizilis cerviniveniris OBERHOLSER, Proc. Ac. Nat. Sci. Phila., June 2, 1899, 208. 
Amazilia cerviniventris cerviniventris OBERHOLSER, Auk, xv, Jan., 1892, 38. 
Amizilis cerviniventris cerviniventris AMERICAN ORNITHOLOGISTS’ Unton, Check 
List, 3d ed., 1910, 205. 
Amila cerviniventris Boucarp, Notes quelques Troch., 1873, 12 (Cérdova). 
Amazilia yucatanensis (not Trochilus yucatanensis Cabot) Extiot, Classif. and 
Synop. Troch., 1879, 219, part.—Ripeway, Proc. U. 8. Nat. Mus., i, 1879, 
148, part (Jalapa); iii, 1881, 187, 318, part (Jalapa). 
A[mazilia] cerviniventris (typica) Harrert, Das Tierreich, Troch., 1900, 59. 
* Nine specimens, 6 Five specimens. 
