BIRDS OF NOETH AND MIDDLE AMERICA. 749 



Page 321: To synonymy of Oyanolyca nana add: 



[Gwnmlina] nana Heine and Ebichenow, Nom. Mus. Hein. Orn., 1882, 117. 



Page 323: To synonymy of Cyanolyca mitrata add: 



[Cyanolyca] omata Heine and Reichenow, Nom. Mus. Hein. Orn., 1882, 117 

 (Mexico). 



Page 323: To synonymy of genus Aphelocoma add: 



Garrulina Gray, Oat. Gen. and Subgen. Birds, 1855, 148 (ex Bonaparte, Ann. 



Sci. Nat., iv ser., i, no. 2, 1854, 113, nomen nudum). (Type, Cyanocorax 



unicolor Du Bus. ) 

 SeiberocUia Coues, Key N. Am. Birds, 5th ed., i, 1903, 499. (Type, Pica sieberii 



Wagler. ) 



Page 326: Cancel last two paragraphs of Key to the Species and Sub- 

 species of Aphelocoma and substitute the following: 

 a. Color lighter blue (cobalt or cerulean). (Aphelocoma unicolor.) 

 b. Smaller, with the blue of a cobalt hue; wing of adult male averaging 161.5, tail 

 153.5. (Southeastern Mexico, in States of Vera Oruz, Puebla, and Mexico.) 



Aphelocoma nnicolor unicolor (p. 344) 

 66. Larger, with the blue of a cerulean hue; wing of adult male averaging 167, 

 tail 157.5. (Highlands of Ohiapas and Guatemala. ) 



Aphelocoma unicolor coelestis (p. 345) 

 aa. Color darker blue (dark smalt or cyanine). (Wing of adult male averaging 

 164.8, tail 168.7.) (Southwestern Mexico, in mountains of Guerrero. ) 



Aphelocoma gnerrereusia (p. 749) 



Page 329: To citation of Aphelocoma californica Bonaparte, Notes 

 Orn. Coll. Delattre, 1854, add: p. 6. 

 Page 344: To synonymy of ApJielocoma unicolor unicolor add: 

 \QamiXma\ unicolor Heine and Reichenow, Nom. Mua. Hein. Orn., 1882, 117 

 (Mexico). 



Page 345: To synonymy of Aphelocoma unicolor codestis add: 

 Aphelocoma unicolor ccelestis Ridgway, Proc. Biol. Soc. Wash., xvi, Sept. 30, 1903, 

 108 (San Cristobal, Chiapas; coll. U. S. Nat. Mus.). 



Page 345: A recentlj^ discovered species, allied to the A. unicolor, is 



APHELOCOMA GUERRERENSIS Nelson. 

 GUERRERO JAY. 



Similar to A. unicolor unicolor, but much larger and darker. 



Adults {sexes alike). — Uniform glossy purplish grayish blue,** the 

 remiges and rectrices with black shafts, their under surface slaty black; 

 bill, legs, and feet black. 



Adult male.— Length (skins), 332-353 (345); wing, 158-168 (164.8); 

 tail, 160-173 (168.7); exposed culmen, 29-31 (30); tarsus, 40-42.5 

 (41.4); middle toe, 23.5-25 (24.4).* 



"The color can not be nearly matched by any shown in my Nomenclature of 

 Colors; it comes nearest to cyanine blue, but in the best light appears lighter and 

 more violet. 



b Six specimens. 



