326 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



aa. TTiuler parts uniform bright blue, similar in color to upper parts. (Aphelocoma 

 unicolor. ) 

 h. 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 unicolor unicolor (p. 344) 

 hb. Larger, with the blue of a cerulean hue (wing of adult male averaging 167, tail 

 157.5). (Highlands of Guatemala and Chiapas.) 



Aphelocoma unicolor coelestis (p. 345) 



APHELOCOMA CYANEA (Vieillot). 

 FLORIDA JAY. 



Adults {sexes alike). — Pileum, hindneck, sides of neck, scapulars, 

 wings, upper tail-coverts, and tail plain dull azure blue, the first fading 

 anteriorly and laterally into paler blue on forehead and superciliary 

 region (the latter sometimes white or bluish white); sides of head 

 (auricular, orbital, and malar regions) duller blue, becoming dusky on 

 lores and immediately around eyes; back and rump smoke gray or 

 drab-gray, the latter tinged with blue; chin and upper throat grayish 

 white, gradually shading into light gray on chest, the feathers with 

 narrow shaft-lines of dusky; feathers of lower chest blue, forming 

 a semicircular collar confluent laterally with blue of sides of neck; 

 breast, abdomen, sides, and flanks light smoke gray, deepest laterally, 

 fading into white on anal region; under tail-coverts dull azure blue; 

 bill, legs, and feet black; iris brown. 



Young. — Pileum, hindneck, sides of neck, auricular region, etc., 

 deep mouse gray (rather browner posteriorly, where feathers some- 

 times indistinctly tipped with paler); back, .scapulars, rump, and upper 

 tail-coverts paler and browner gray (sometimes pale drab-gray or hair 

 brown), the feathers sometimes with paler tips; chin, throat, and abdo- 

 men dull whitish; under tail-coverts light gray; rest of under parts 

 light grayish, deeper across lower part of chest, where forming a more 

 or less strongly indicated semicircular collar; wings and tail as in 

 adults, the smaller wing-coverts, however, grayish, and the greater 

 wing-coverts narrowlj' tipped with pale grayish. 



J.<^M?z!mafo.— Length (skins), 288-294.6 (291\; wing, 112-117 (115.5); 

 tail, 136.5-145.5 (140.5); exposed culmen, 26-27.5 (26); depth of bill at 

 nostrils, 9. 5-10. 5 (10) ; tarsus, 37. 5-40 (38. 6) ; middle toe, 21. 5-22. 5 (22).« 



A<Mt female.— L&ngth. (skins), 266.6-282 (273); wing, 106-113.5 

 (109); tail, 129-137.5 (132.5); exposed culmen, 24-26.5 (26); depth of 

 bill at nostrils, 8.4-9.1 (8.9); tarsus, 35.5-39 (37); middle toe, 19.6-22.5 

 (21)." 



Peninsula of Florida (in oak scrub, irregularly distributed). 



Oarrulus cyaneus'ViErLi.oT, Noiiv. Diet. d'Hist. Nat., xii, 1817, 476 (Florida, etc.). 

 Aphelocoma cyanea Cohes, Auk, xvi, Jan., 1899, 84, in text. — American Orni- 

 thologists' Union Committee, Auk, xvi, Jan., 1899, 112. 



«rive specimens. 



