452 BULLETIN oO, UNITED STATES NATIONAL MUSEUM. 



ARREMONOPS CHLORONOTUS (Salvin). 

 GREEN-BACKED SPARROW. 



Adults {sexes alike). — Pileuin with two In-oad lateral stripes of black 

 or brownish black, sometimes indistinctly streaked with brown, sepa- 

 rated by a broad median stripe of slate-g-ray; rest of upper parts uni- 

 form rather bright olive-green; edge of wing canar}^ 3'ellow; sides of 

 head, including malar region, slate-gray, relieved by a narrow post- 

 ocular stripe of brownish black or blackish l)rown, and a triangular 

 spot of the same in front of eye; chin and throat dull white; chest 

 and sides smoke-gra^dsh, changing to light olive-green on lianks; 

 abdomen white; under tail-coverts yellowish olive or olive-yellowish, 

 sometimes inclining to buff; under wing-coverts mostly pale yellow; 

 maxilla black or brownish black, mandible light colored; legs and feet 

 brownish. 



Yfjung. — Similar to adult, but pileum dull grayish olive-green, 

 faintly clouded with grayish dusky, and under parts mostly gva3dsh, 

 tinged with olive-yellowish and very slightly intermixed with white 

 along median line. 



Length (skins), 123.19-152.40 (141.48); wing, 60.96-68.83 (66.04); 

 tail, .54.61-62.23 (58.93); exposed culmen, 12.70-14.22 (13.72); depth 

 of bill at base, 7.87-8.64 (8.13); tarsus, 22.35-27.18 (24.38); middle 

 toe, Ih. 75-18. 03 (17.02).^ 



■ Since the above was written, specimens of this form have been 

 received by the Biological Survey from Chiapas and Tabasco, which 

 measure as follows: 



Adult ;/w^^.— Length (skins), 143.00-149.86 (146.30); wing, 65.53- 

 68.07 (66.80); tail, 58.93-60.96 (59.94); exposed culmen, 14.22-15.75 

 (14.73); depth of bill at base, 9.14-9.65 (9.40); tarsus, 23.37-24.13 

 (23.88); middle toe, 15.49-16.76 (16.00).'' 



Adult female.— L(ix\gi\\ (skins), 139.19-148.34 (140.46); wing, 63.50- 

 68.58 (66.04); tail, 57.15-58.42 (57.91); exposed culmen, 13.97-14.73 

 (14.48); depth of bill at base, 8.64-8.89 (8.76); tarsus, 22.10-23.88 

 (23.37); middle toe, 14.73-15.49 (15.24).' 



Southeastern Mexico, in States of Chiapas (Yajalon; Palenque), 

 Campeche (Apazote), and Tabasco (Frontera; Monte Cristo), southern 

 Yucatan (Chable), Guatemala, British Honduras, and northern Hon- 

 duras (San Pedro Sula). 



Emhernacjra chloronotn Salvin, Proc. Zool. Soc. Lond., 1861, 202 (Choctnm, 

 Vera Paz, Guatemala; coll. Salvin and Godman); Ibis, 1861, 353 (Chisec, 

 Guatemala). — Sclater, Cat. Am. Birds, 1862, 117 (Guatemala). — Bol'Card, 

 Proc. Zool. Soc. Lond., 1883, 444, part (Chable, Yucatan). — Salvin and 

 GoDMAN, Biol. Centr.-Am., Aves, i, 1886, 413 (Chable, Yucatan; Brit. Hon- 

 duras; Chisec and Choctum, Guatemala). 



[^Embernagra'] chloronota Gray, Hand-list, ii, 1870, 91, no. 7337. — Sclater and 

 Salvin, Nom. Av. Neotr., 1873, 33. 



■• Seven adults, of which only one is sexed. ^ Four specimens. 



