BIKDS OF NOKTH AND MIDDLE AMERICA. 



119 



Adult ;«rt/t^— Length (skins), 90.93-114.81 (100.08); wing, 58.17- 

 66.04 (62.18); tail, 35.56-43.18 (38.10); exposed culmen, 9.14-10.41 

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

 middle toe, 8.61-10.41 (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, 

 9.14-10.16 (9.65); depth of bill at base, 7.87; tarsus, 12.19-12.95 (12.45); 

 middle toe, 8.8 t-9.91 (9.40).' 



Extreme southern portion of Mexico (State of Chiapa.s), 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 3'ellow below; but the diti'erence 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. ]). mexicanus., are as follows: 



Chrysumltris Diexicana (not Carduelis mexlcana Swainson) Sclater and S.ilvin, Ibis, 

 1859, 19 (Guatemala); Proc. Zool. Soc. Lond., 1864, 353 (Lion Hill, Panama, 

 R. R.). — Salvin and Sclater, Ibi.s, 1860, 34 (Duenas, Guatemala). — Sclater, 

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

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

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

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

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

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

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

 206, part ( Guatemalan, Costa Rican, Yeraguan, 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). 



\_Chryso)nitris] mexicana Scl.\ter and Salvin, Xom. Av. Neotr., 1873, 34, jiart 

 (Central America; Panama). 



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



Astragalinus mexicanus Cabanis, Journ. fiir Orn., 1861, 7 (Costa Rica). 



Sjiinus mexicanus Zeledon, An. Mus. Nac. Costa Rica, i, 1887, 112 (San Jose, 

 Cartago, and Yolcan de Irazu, Costa Rica). — Cherrie, Auk, ix, 1892, 249 

 (San Jose, Costa Rica). 



^ Seventeen specimens. 



'Four specimens. 



