BIRDS OF NORTH AND MIDDLE AMERICA. 



119 



Adult maZe.— Length (skins), 90.93-lli.81 (100.08); wing, 58.17- 

 66.04 (62.18); tail, 36.56-43.18 (38.10); exposed culmen, 9.11-10.41 

 (9.91); depth of bill at base, 7.37-7.62; tarsus, 12.19-12.95 (12.70); 

 middle toe, 8.64-10.41 (9.65).' 



Adult female. — Length (skins), 96.77-114.81 (2 specimens only); 

 wing, 56.90-64.52 (61.72); tail, 35.31-40.89 (38.10); exposed culmen, 

 9.11^10.16 (9.65); depth of bill at base, 7. 87; tarsus, 12.19-12.95 (12.45); 

 middle toe, 8.8-)-9.91 (9.40)." 



Extreme southern portion of Mexico (State of Chiapas), and south 

 through Central America to Isthmus of Panama, occasionally to Santa 

 Marta, Colombia, and even to Ecuador (Valle del Mira). 



Specimens from Guatemala and Chiapas average slightly larger, at 

 least in length of wing and tail, than those from farther southward, 

 and are appreciably paler j^ellow below; but the difference is much 

 less between those from Chiapas and Guatemala on the one hand and 

 those from the Isthmus of Panama than between the former and those 

 from more northern parts of Mexico. Average measurements of the 

 males in the two series, together with those from Costa Rica (an inter- 

 mediate district) and those of A. p. mexicanus, are as follows: 



Chrysomitris tnexicana (not Carduelis raexicana Swainson) Sclater and Salvin, Ibis, 

 1859, 19 (Guatemala); Proc. Zool. Soc. Lond., 1864, 853 (Lion Hill, Panama, 

 R. R.). — Salvin and Solatek, Ibis, 1860, 34 (DueSias, Guatemala). — Sclater, 

 Cat. Am. Birds, 1862, 124, part (Guatemala). — Cassin, Proc. Ac. Nat. Sci. 

 Phila., 1865, 93, part (monogr.).— Lawrence, Ann. Lye. N. Y., ix, 1868, 103 

 (Barranca and San Jos6, Costa Rica). — Salvin, Ibis, 1869, 314 (Costa Rica; 

 crit. ) ; Proc. Zool. Soc. Lond., 1870, 190 ( Veragua) ; Cat. Strickland Coll., 1882, 

 214 (Guatemala). — Zelbdon, Cat. Aves de Costa Rica, 1882, 9. — Salvin and 

 GoDMAN, Biol. Centr.-Am., Aves, i, 1886, 431, part (Costa Rica, Veragua, and 

 Panama references and localities). — Sharpe, Cat. Birds Brit^ Mus., xii, 1888, 

 206, part (Guatemalan, Costa Rican, Veraguan, and Panama references and 

 localities). — Bangs, Proc. Biol. Soc. Wash., xii, 1898, 139 (Santa Marta, Colom- 

 bia). — Salvadori and Festa, Boll. Mus. Zool. , etc. , Torino, xv, 1899, 27 (Valle 

 del Mira, Ecuador, May). 



[Chrysomitris] mexicana Sclater and Salvin, Nom. Av. Neotr., 1873, 34, part 

 (Central America; Panama). 



Chrysomitris mexicanus Lawrence, Ann. Lye. N. Y.,vii, 1862,332 (PanamaR.R. ). 



Adragalinus mexicanus Cabanis, Journ. fur Orn., 1861, 7 (Costa Rica). 



Spinus mexicanus Zeledon, An. Mus. Nac. Costa Rica, i, 1887, 112 (San Jos^, 

 Cartago, and Volcan de Irazii, Costa Rica). — Cherkie, Auk, ix, 1892, 249 

 (San Jos^, Costa Rica). 



^ Seventeen specimens. 



' Four specimens. 



