556 BULLETIN 50, UNITED STATES NATIONAL MUSEUM, 
CHLOROSTILBON CANIVETII OSBERTI (Gould). 
GUATEMALAN EMERALD. 
Similar to C. c. canivetii, but tail shorter and less deeply forked, 
that of adult male with gray tips to middle rectrices much less dis- 
tinct (being both narrower and darker), sometimes obsolete. 
Adult male.—Length (skins), 74-86 (79); wing, 43-49 (45.8); tail, 
28.5-33.5 (31.1); middle rectrices, 17-20 (18.6); culmen, 13.5-15.5 
(14.3).¢ 
Adult female.—Length (skins), 75-76.5 (76); wing, 45-46.5 (45.7); 
tail, 27.5; middle rectrices, 23; culmen, 15-15.5 (15.2).? 
Guatemala (Guatemala City; Cobian; Duefias; San Gerénimo; Lan- 
-quin; Amatitlin; San Anténio; San José; Gualan; Volcan de Fuego), 
Salvadér (Acajutla; La Libertad; Volcén de San Miguél), and Hon- 
duras (San Pedro Sula; Bonaca and Ruatan islands ?).¢ 
Chlorostilbon osberti Goutp, Proc. Zool. Soc. Lond., 1860, 309 (Guatemala; coll. 
J. Gould); Mon. Troch., pt. xxii, vol. v, 1861, pl. 354.—Satvin and ScLaTER, 
Ibis, 1860, 40 (Duefias and Volcdn de Fuego, Guatemala, 5,000 ft.).—Saxvin, 
Ibis, 1860, 195, 263, 271 (Duefias and San Gerénimo). 
[Chlorostilbon] osberti ScLATER and Satvin, Nom. Av. Neotr., 1873, 94.—SuHarpe, 
Hand-list, ii, 1900, 112. % 
Chlorostilbon osbertit SctaTeR, Cat. Am. Birds, 1862, 318 (Duefias). 
Chlorolampis osberti Goutp, Introd. Troch., oct. ed., 1861, 174.—Satvin, Ibis, 
1866, 204.—Boucarp, Gen. Hum. Birds, 1894, 115, part (Guatemala). 
C[hlorolampis] osberti Huine, Journ. fiir Orn., 1863, 200. ‘ 
[Hylocharis] osberti Gray, Hand-list, i, 1869, 149, no. 1933. 
[Chlorostilbon caniveti] var. osberti Mutsant, Ann. Soc. Linn. Lyon, n. 8., xxii, 
1876, 209. 
[Chlorostilbon] caniveti osberti Harter, Journ. fiir Orn., 1900, 361. 
[Chlorostilbon] caniv[eti] osbertti Son, Cat. Troch., 1897, 17. 
C[hlorostilbon] caniveti osberti Harter, Das Tierreich, Troch., 1900, 74. 
Chlorostilbon canivetit (not Ornismya canivetti Lesson) ScLaTeR and Satvin, Ibis, 
1859, 130 (Guatemala). 
Chloristilbon caniveti Extiot, Ibis, 1875, 168, part (Guatemala; Honduras; crit.; 
synonymy). 
Chlorostilbon canivett Exxtot, Classif. and Synop. Troch., 1879, 248, part (Guate- 
mala).—Satvin, Cat. Birds Brit. Mus., xvi, 1892, 46, part (Lanquin, San 
Gerénimo, Cob4én, Volcén de Fuego, and Duefias, Guatemala; Volcdn de 
San Miguél and La Libert4d, Salvadér; Bonaca and Ruatan islands, Hon- 
duras ?).—Satvin and Gopman, Biol. Centr.-Am., Aves, ii, 1892, 263, part 
(Guatemalan and Salvadorean localities) —DEARBORN, Pub. 125, Field Mus. 
N. H., 1907, 99 (Gualén and San José, Guatemala). 
(?) Chlorostilbon caniveti Satvin, Ibis, 1889, 366 (Bonaca and Ruatdn islands). 
Chlorolampis caniveti Mutsant and VERREAUX, Hist. Nat. Ois.-Mouch., ii, livr. 
2, 1875, 81, part (Duefias, Guatemala).—Bovucarp, Liste Ois. récol. Guat., 
1878, 47. 
@ Ten specimens. 
6 Two specimens. 
¢ Specimens from these islands not seen by me. According to Salvin (Ibis, 1889, 
366) they present some peculiarities, and it is possible they may represent a definable 
local form. 
