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 maZe.— 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; Coban; Dueiias; San Geronimo; Lan- 

 quin; Amatitlan; San Antonio; San Jose; Gualan; Volcan de Fuego), 

 Salvador (Acajutla; La Libertad; Volcan de San Miguel), and Hon- 

 duras (San Pedro Sula; Bonaca and E-uatan islands?).'^ 



Chlorostilbon osberti Gould, Proc. Zool. Soc. Lond., 1860, 309 (Guatemala; coll. 

 J. Gould); Mon. Troch., pt. xxii, vol. v, 1861, pi. 354. — Salvin and Sclater, 

 Ibis, 1860, 40 (Dueiias and Volcan de Fuego, Guatemala, 5,000 ft.). — Salvin, 

 Ibis, 1860, 195, 263, 271 (Duenas and San Geronimo). 



[Chlorostilbon] osberti Sclater and Salvin, Nom. Av. Neotr., 1873, 94. — Sharps, 

 Hand-list, ii, 1900, 112. 



Chlorostilbon osbertii Sclater, Cat. Am. Birds, 1862, 318 (Duenas). 



Chlorolampis osberti Gould, Introd. Troch., oct. ed., 1861, 174. — Salvin, Ibis, 

 1866, 204.— BoucARD, Gen. Hum. Birds, 1894, 115, part (Guatemala). 



Clhlorolampisi osberti Heine, Journ. fiir Orn., 1863, 200. 



[Hylocharis] osberti Gray, Hand-list, i, 1869, 149, no. 1933. 



[Chlorostilbon caniveti] var. osberti Mulsant, Ann. Soc. Linn. Lyon, n. s., xxii, 

 1876, 209. 



[Chlorostilbon] caniveti osberti Hartert, Journ. fiir Orn., 1900, 361. 



[Chlorostilbon] caniv[eti] osberti Simon, Cat. Troch., 1897, 17. 



C[hlorostilbon] caniveti osberti Hartert, Das Tierreich, Troch., 1900, 74. 



Chlorostilbon canivetii (not Ornismya canivetii Lesson) Sclater and Salvin, Ibis, 

 1859, 130 (Guatemala). 



Chloristilbon caniveti Elliot, Ibis, 1875, 168, part (Guatemala; Honduras; crit.; 

 synonymy). 



Chlorostilbon caniveti Elliot, Classif. and Synop. Troch., 1879, 243, part (Guate- 

 mala). — Salvin, Cat. Birds Brit. Mus., xvi, 1892, 46, part (Lanquin, San 

 Geronimo, Coban, Volcdn de Fuego, and Duenas, Guatemala; Volcdn de 

 San Miguel and La Libertad, Salvador; Bonaca and Ruatiin islands, Hon- 

 duras?). — Salvin and GoDMAN, Biol. Centr.-Am., Aves, ii, 1892, 263, part 

 (Guatemalan and Salvadorean localities). — Dearborn, Pub. 125, Field Mus. 

 N. H., 1907, 99 (Gualan and San Jose, Guatemala). 



(?) Chlorostilbon caniveti Salvin, Ibis, 1889, 366 (Bonaca and Ruatan islands). 



Chlorolampis caniveti Mulsant and Verreaux, Hist. Nat. Ois.-Mouch., ii, H-vt. 

 2, 1875, 81, part (Duenas, Guatemala). — Boucard, Liste Ois. recol. Guat., 

 1878, 47. 



o Ten specimens. 



b Two specimens. 



c 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. 



