.750 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Adult female. — Length (skins), 334-350 (342); wing-, 166; tail, 

 168-169 (168.5); exposed culmen, 28-29 (28.5); tarsus, 41..5-42 (41.Y); 

 middle toe, 23-23.5 (23.2). « 



Mountains of southwestern Mexico, in State of Guerrero (Omilteme). 



Aphelocoma guerrerensis Nelson, Proc. Biol. Soc. Wash., xvi, Nov. 30, 1903, 154r 

 (Omilteme, Guerrero; coll. U. S. Nat. Mus. ). 



Page 345: To synonj^my of genus Cyanocitta add: 



Stellerocitta Coues, Key N. Am. Birds, 5th ed., i, 1903, 495. (Type, Corvus 

 stelleri Gmelin. ) 



In The Condo7\ iv, 1902, 41-44, there is a paper by Mr. Walter K. 

 Fisher on the North American forms of Cyanocitta stelleri (except C. s. 

 diademata), accompanied b}^ a map showing clearly the geographic 

 range of each form together with areas of intergradation. The reader 

 is referred to this paper, not only for special information on the species 

 and its geographic variations but also as a model of the ver}^ best t^'pe 

 of technical ornithologj^. 



Page 353: Citation of Cyanocitta stelleri lito7'alis Maj^nard to be 

 corrected as follows: 



Cyanocitta stelleri UtoraUs Maynard, Ornithologist and Oologist, xiv, no. 4, Apr., 

 1889, 59 (Vancouver I., British Columbia; coll. F. B. Webster). 



Page 355: To citations of Cyanocitta stelleri carhonacea add: 



Andrews and Grinnell (J.), Proc. Ac. Nat. Sci. Phila., 1903, 9 (Siskiyou Mts., 

 California; habits; crit.). 



Page 357: To citation of Cyanura stelleri under Cyanocitta stelleri 

 annectens add: 



Blakiston, Ibis, 1862, 8 (Rocky Mts., n. w. Canada). 



Page 362: To synonym}^ of Cyanocitta stelleri azteca add: 



\Lop]iocorax\ diadematus Heine and Reichenow, Nom. Mus. Hein. Orn., 1882, 

 116 (Mexico). 



Pa^e364: To synonymy of Cyanocitta stelleri coronata add: 



\_Cyanodtta\ ^aZeato Heine and Reichenow, Nom. Mus. Hein. Orn., 1882, 116 

 ("Bogota"). 



Page 364: For genus Perisoreus Bonaparte read ^Vac^^^.s Billberg, 

 and insert the following reference: 



Cractes Billberg, Synopt. Faunae Scand., i, pt. ii, 1828, 14. (Type, Corvus 

 infaustus Linnseus. ) 



Page 366: For Perisoreus canadensis canadensis read Cractes cana- 

 densis canadensis. 



Page 368: For Perisoreus canadensis nigricapillus Ridgwa}^ read 

 Cractes canadensis nigricajpillus (Ridgway). 



« Two specimens. 



