BIRDS OF NORTH AND MIDDLE AMERICA. 259 



C[hrysotis] albifrons Lawrence, Ibis, 1871, 251, part (Costa Rica; Yucatan). — 



Sclater, Ibia, 1880, 378, in text (Rio Montagua and Rio Chiguate, Guate- 

 mala; crit). 

 [Chrysotis] albifrons Sclater and Salvin, Norn. Av. Neotr., 1873, 113, part.— 



Forbes and Robinson, Bull. Liverpool Mus., i, 1897, 14, part ("Zucapa," 



i. e., Zacapa, Guatemala). 

 Chrysotis albifrons albifrons Carriker, Ann. Carnegie Mus., vi, 1910, 488 (Tenorio, 



Bebedero, etc., Costa Rica). 

 Amazona albifrons Schlegel, Mus. Pays-Bas., iii, no. 26 (Psittaci), 1864, 59, part; 



no. 38 (Revue), 1874, 28 (Rio Chiguate, w. Guatemala). — Zeled6n, Anal. 



Mus. Nac. C. R., i, 1887, 124 (Liberia, Costa Rica).— Chapman, Bull. Am. 



Mus. N. H., viii, 1896, 286 (Chichen-Itza, Yucatan).— Dearborn, Pub. 125, 



Field Mus. N. H., 1907, 86 (Gualan and San Jose, Guatemala; crit.). 

 A[mazona] albifrons Ridgway, Man. N. Am. Birds, 1887, 588, part; 2d ed., 1896, 



595, part. 

 [Amazona] albifrons Sharps, Hand-list, ii, 1900, 22, part. 

 Androglossa albifrons Reichenow, Journ. fur Orn., 1881, 375, part; Consp. Psitt., 



1882, 215, part. 

 [Androglossus] albifrons Heine and Reichenow, Norn. Mus. Hein., Orn., 1890, 



232 (Yucatan). 

 Amazona albifrons nana Miller (W. De W.), Bull. Am. Mus. N. H., xxi, Nov. 24, 



1905, 349 (Calotmul, Yucatan; coll. Am. Mus. Nat. Hist.).— Cole, Bull. Mus. 



Comp. Zool., 1, 1906, 125 (Chichen-Itza, Yucatan; crit.). 

 Amazona nana Salvadori, Ibis, Oct., 1906, 649. 



AMAZONA ALBIFRONS SALTDENSIS Nelson. 



SOHOBAN PARROT. 



Similar to A. a. albifrons but the green of a decidedly more bluish 

 hue, especially on under parts, which are strongly tinged with glau- 

 cous-green, blue of crown deeper as well as more extended, frequently 

 invading occiput and hindneck, and red of loral and orbital regions 

 paler. 



Aduilt male.— Length (skins), 247-265 (257); wing, 182-192 (186.3); 

 tail, 89-98 (93.7); culmen, 22.5-27 (24.9); tarsus, 18-20 (18.7); 

 outer anterior toe, 24-27.5 (25.5).° 



Adult female.— Length (skins), 242-261 (250); wing, 173.5-181.5 

 (178.6); tail, 85.5-97.5 (87.6); culmen, 22-24.5 (23.2); tarsus, 18-19 

 (18.4); outer anterior toe, 20.5-24.5 (22.8) . 6 



Northwestern Mexico, in State of Sonora (Camoa; Alamos; Sierra 

 de Alamos; Quiriego; Batamotal). 



Chrysotis albifrons (not Psittaeus albifrons Sparrman) Salvadori, Cat. Birds Brit. 



Mus., xx, 1891, 311, part (Quiriego and Sierra de Alamos, Sonora). — Salvin 



and Godman, Biol. Centr.-Am., Aves, ii, 1897, 593, part (Quiriego and Sierra 



de Alamos, Sonora). 

 [Amazona] albifrons Shaepe, Hand-list, ii, 1900, 22, part. 

 Amazona albifrons saltuensis Nelson, Proc. Biol. Soc. Wash., xiii, May 29, 1899, 



26 (Camoa, Sonora; coll. U. S. Nat. Mus.). 

 A[mazona] albifrons saltuensis Cole, Bull. Mus. Comp. Zool., 1, 1906, 126, in text 



(crit.). 

 Amazona saltuensis Salvadori, Ibis, Oct., 1906, 648 (crit.). 



o Ten specimens. b Nine specimens. 



