426 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
more greenish, sometimes nearly bluish green; length (skins, 95-103 
(100); wing, 54-61 (57.9); tail, 31.5-34 (32.6); culmen, 19.5-23 
(21.2). 
Young.—Essentially like adults, but coloration much duller; 
pileum very dull greenish blue, the feathers margined, more or less 
distinctly, with light brownish; feathers of rump and upper tail- 
coverts narrowly but distinctly tipped or terminally margined with 
pale grayish buffy; rectrices narrowly margined at tip with whitish; 
under parts more or less suffused with buffy, especially on chin, throat, 
and sides. 
Southeastern Mexico, in States of Vera Cruz (Cérdova; Codtepec; 
Orizaba; Miradér; Huatusco; Jalapa; Jico; Téxolo), Oaxaca 
(Chimalapa; Guichicovi; Tehuantepec; mountains near Santo 
Domingo), and Chiapas (Gineta Mountains; Yajalén). 
Ornismya cyanocephalus Lesson, Hist. Nat. Ois.-Mouch., 1829, p. xlv (‘‘Brésil”). 
Ornismya cyanocephala Lesson, Suppl. Ois.-Mouch., 1830-31, 132, pl. 17, 134, 
pl. 18 (‘‘Brésil”). 
Trochilus cyanocephalus Lesson, Index Gen. et Synop. Troch., 1832, p. xxii, part. 
Cyanomyia cyanocephala Bonaparte, Rev. et Mag. de Zool., 1854, 254.—GouLp, 
Mon. Troch., v, 1856, pl. 286; Introd. Troch., oct. ed., 1861, 147.ScLaTER, 
Proc. Zool. Soc. Lond., 1857, 212 (Orizaba, Vera Cruz); 1859, 367 (Jalapa, 
Vera Cruz).—D’Oca, Proc. Ac. Nat. Sci. Phila., 1868, 80 (habits); La Natu- 
raleza, ili, 1875, 159 (Jalapa, Codtepec, and Cérdova, Vera Cruz); Troq. de 
Mex., 1875, 37, pl. (7), fig. 26—LawreEnce, Bull. U. 8S. Nat. Mus., no. 4, 
1876, 32 (Guichicovi, Oaxaca).—EL.iot, Ibis, 1876, 314, part (synon.; crit.).— 
Mutsant, Ann. Soc. Linn. Lyon, xxii, 1876, 204.—Satvin, Cat. Birds Brit. 
Mus., xvi, 1892, 197 (Jalapa, Codtepec, Orizaba, and Cérdova, Vera Cruz; 
Oaxaca and Chimalapa, Oaxaca).—Sauvin and Gopmav, Biol. Centr.-Am., 
Aves, ii, 1892, 291 (Huatusco, etc., Vera Cruz; Gineta Mts., Chiapas; etc.).— 
Boucarp, Gen. Hum. Birds, 1895, 163, part (Mexico). 
[Cyanomyia] cyanocephala SctaTeR and Satvin, Nom. Av. Neotr., 1873, 91, part 
(Mexico).—Sancuzz, Anal. Mus. Nac. Mex., i, 1877, 96 (Jalapa, Cérdova, 
Orizaba). 
[Agyrtria. 8. Uranomitra] cyanocephala ReicHenBacn, Aufz. der Colibr., 1854, 10. 
[Agyrtria] cyanocephala ReicHENBACH, Troch. Enum., 1855, 7. 
Leucolia cyanocephala Mutsant and VERREAUX, Classif. Troch., 1866, 31; Hist. 
Nat. Ois.-Mouch., i, livr. 3, 1874, 219. 
[Polytmus] cyanocephalus Gray, Hand-list, i, 1869, 133, no. 1712. 
Uranomitra cyanocephala Ex11o7, Classif. and Synop. Troch., 1879, 197.—FERRaRI- 
Perez, Proc. U. S. Nat. Mus., ix, 1886, 158 (Jalapa)—Cuarman, Bull. Am, 
Mus. N. H., x, 1898, 33 (Jalapa)—Lanrz, Trans. Kansas Ac. Sci. for 1896-97 
(1899), 221 (Codtepec). 
[Amazilia] cyanocephala SHarre, Hand-list, ii, 1900, 109. 
Cyanomya cyanocephala Boucarp, Notes quelques Troch., 1873, 8 (Cérdova, 
Jalapa, and Orizaba, Vera Cruz); Ann. Soc. Linn. Lyon, xx, 1874, 276 (do.).— 
Sumicurast, La Naturaleza, v, 1881, 250 (Orizaba, Vera Cruz; Guichicovi, 
Oaxaca). 
Cyanomya (Leucolia) cyanocephala Mutsant and VERREAUX, Hist. Nat. Ois.- 
Mouch., iv, livr. 8, 1878, 170 (crit.). 
« Eight specimens. 
