BIRDS OP NORTH AND MIDDLE AMERICA. 



297 



to rcctriccs more extended, and size (except Icngtii of tail) a,\{irnging 

 somewhat larger. 



Adult male.— Length (skins), 413-571.5 (500.5); wing, 181.5-208.5 

 (192.5); tail, 235-343 (291.5); exposed culmen, 28.5-36.5 (32. .5); depth 

 of bill at nostrils, 1^16.5 (15); tarsus, 42.5-48.5 (46.5); middle toe, 

 28-32 (30).« 



Adult female.— Length, (skins), 470-488 (471); wing, 180.5-193 

 (186.5); tail, 231-275.5 (251.5); exposed culmen, 30-35.5 (33); depth 

 of bill at nostrils (one specimen), 14; tarsus, 43.5-48 (46); middle toe, 

 29.5-31.5 (30.5).» 



State of Chiapas (Huehuetan), southern Mexico, and southward 

 through Guatemala to western Costa Kica; chiefly on the Pacific 

 side, but occurring in southeastern Guatemala (Rio Managua) and in 

 Honduras (?). 



Calocitta formosa (not Picaformosa Swainson) Sclatek and Salvin, Ibis, 1859, 22 

 (both coasts, Guatemala). — Sclatek, Cat. Am. Birds, 1862, 145 (Guate- 

 mala). — Salvin, Ibis, 1870, 114 (Costa Rica) . — Sharpe, Cat. Birds Brit. Mus., 

 iii, 1877, 88, part (Honduras; Nicaragua). — Boucard, Liste Ois. Guat., 

 1878, 37.— Nutting, Proc. U. S. Nat. Mus., v, 1882, 393 (La Palma de Nicoya, 

 w. Costa Eica); vi, 1883, 374 (San Juan del Sur, Nicaragua), 384 (Sucuya, 

 Nicaragua), 392 (Ometepe, Nicaragua; habits, etc.). — Zeledon, Cat. Aves 

 de Costa Rica, 1882, 10; Anal. Mus. Nac. Costa Rica, i, 1887, 113 (Nicaragua; 

 Bojaces and Liberia, w. Costa Rica). — Salvin and Godman, Biol. Centr.- 

 Am., Aves, i, 1887, 509, part (Savana Grande, Escuintla, Retalhuleu, Rio 

 Montagua, Chuacaa, and Zacapa, Guatemala; Tigre I. and Comayagua, Hon- 

 duras; Ometepe I., Nicaragua). — Underwood, Ibis, 1896, 437 (Volcan de 

 Miravalles, Costa Rica).— Lantz, Trans. Kana. Ac. Sci. for 1896-97 (1899), 

 222 (Naranjo, Guatemala). 



\_Calocitta\ formosa Sclater and Salvin, Nom. Av. Neotr., 1873, 40, part (Guate- 

 mala, Costa Rica). 



C'lcdocitta] formosa Ridgway, Man. N. Am. Birds, 1887, 350, part (Costa Rica). 



"Twelve specimens. 



6 Three specimens. 



Specimens from Guatemala and southward are smaller than those from Chiapas, 

 and, as a rule, are appreciably less distinctly blue in the color of the back, etc. ; but 

 without a much larger series I am unable to determine whether the differences are 

 suflBciently obvious or constant to justify further subdivision of -the species. Average 

 measurements according to locality are as follows: 



