BIRDS OF NORTH ANB MIDDLE AMERICA. 



361 



hua Mts., Arizona; habits). — Ameeican Ornithologists' Union, Check List, 

 1886, no. 4786.— Mbarns, Auk, vii, 1890, 256 (MogoUon and San Francisco 

 mountains, Arizona). — Meeeiam, North Am. Fauna, no. 3, 1890, 39 (Grand 

 Canyon of the Colorado), 94 (San Francisco Mts.). — Jouy, Proc. U. S. Nat. 

 Mus., xvi, 1893, 781 (mountains s. of Nogales, Sonora). — Allen, Bull. Am. 

 Mus. N. H., V, 1893, 37 (El Pinita, n. e. Sonora).— Bendire, Life Hist. N. Am. 

 Birds, ii, 1895, 367, pi. 5, figs.' 11, 12 (eggs). 



ClyanodUa] s[teHeri] Tnacrolopha Coues, Key N. Am. Birds, 2d ed., 1884, 422. 



C{_yanociUa] stelleri macrolopha Ridgway, Man. N. Am. Birds, 1887, 354. 



CYANOCITTA STELLERI AZTECA Ridgway. 

 AZTEC JAY. 



Similar to G. s. diademata, but neck, back, and scapulars dull blue 

 instead of brownish gray, crest more or less tinged or washed with 

 blue, and the general blue color much deeper (rump, upper tail-coverts, 

 and under parts of body azure blue instead of pale blue or light tur- 

 quoise blue, the wing-coverts, secondaries, and tail dull paris blue 

 instead of dull cobalt) ; streaks on forehead more tinged with blue. 



Adult male.— Length (skins), 279.5-294.5 (284.5); wing, 143.5-152 

 (149); tail, 139.5-149.5 (143.5); exposed culmen, 25-28 (26); depth of 

 bill at nostrils, 9.5-10.2 (9.9); tarsus, 40.5-44.5 (42.5); middle toe, 

 23-24 (23.6).« 



Adult female.— Liength (skins), 279.6-292 (281); wing, 137.5-148 

 (142); tail, 134-189 (137); exposed culmen, 23.5-25.5 (25); depth of 

 bill at nostrils, 8.9-9.6 (9.4); tarsus, 41-45 (42.5); middle toe, 22.5- 

 23.5 (23).6 



South-central Mexico, in the States of Vera Cruz (Orizaba, Mira- 

 dor), Puebla (Hacienda de San Pedro and Tochimilco), Morel os 

 (Tetela del Volcan), Mexico (Popocatapetl, Iztacciahuatl, Ajusco, 

 Valley of Mexico, etc.), and Michoacan (Patzcuaro)." 



a Eight specimens. 



* Five specimens. 



"Specimens from Patzcuaro, Michoacan, are somewhat different from ex&mples 

 representing the other localities mentioned above, being slightly deeper in color, 

 with the crest more strongly washed with blue. They also average slightly smaller. 

 They show an approach toward C. s. coronata, which is the form of the adjacent 

 States of Colima and Guerrero, but are decidedly nearer the present foi-m. Speci- 

 mens average in measurements as follows: 



Locality. 



Wing. 



Ex- 

 posed 

 culmen. 



Depth 

 of bill 

 at nos- 

 trils. 



Tarsus. 



Middle 

 toe. 



ADULT MALES. 



Four specimens from State of Mexico (Popocata- 

 petl) 



Four specimens from State of Michoacan (Patz- 

 cuaro ) 



ADULT FEMALES. 



Four specimens from State of Mexico 



One specimen from State of Michoacan 



IBl 

 147 



143 

 139.5 



144.5 

 143 



136.5 

 139 



27 

 26.5 



24.5 

 25.5 



10 

 10 



9.5 

 9.5 



42.5 

 43 



42 

 43 



23.5 

 23 



23 

 23.5 



