308 BULLETIN r.O, UNITED STATES NATIONAL MUSEUM. 



X[unthocltta'] luxuosa Cabanis, Mus. Hein., i, 1851, 224 (Mexico). 

 Xanthoura luxuosa ZuxMosa Ridgway, Auk, xvii, Jan., 1900, 2<S (t-rit.)- 

 Cyanocorax peruvianus (not Corvus peruvianus Gmelin) Cassix, Proc. Ac. Nat. vSci. 



Phila., iv, 1848, 89 (mountains of Vera Cruz). 

 Corvus peruvianus (not of Gmelin) Lichtenstein, Prei^-A'erz. ]Mex. Yog., 1831, 1 



(Mexico). 

 C[ya7iocorax'] (■i/anocapillus Cabanis, in Tschudi's Fauna Peruana, Aves, 1849, 233, 



footnote (Jalapa, Vera Cruz; coll. Berlin Mus.). 



XANTHOURA LUXUOSA GLAUCESCENS Ridgway. 

 RIO GRANDE GREEN JAY. 



Similar to X. /. lu,/'U(m/, but sniallor (the bill especially) and colora- 

 tion paler and duller; back, etc., chromium green or sage green, usu- 

 ally more or less glossed (often extensively) with pale blue; white of 

 forehead usually more restricted, sometimes obsolete ; prevailing color 

 of under parts very pale glaucous-green, often glossed with pale blue; 

 yellow of lateral rectrices, etc., rather paler. 



Young. — Pileum, hindneck, and malar patch greenish blue, the fore- 

 head and palpebral spots similar ))ut paler, and the nasal tufts darker; 

 black of chin, tliroat, chest, etc., much duller than in adults; under 

 parts of l)ody very pale yellowish green or greenish yellow anteriorly, 

 fading on flanks, abdomen, under tail-coverts, etc., into verj^ pale 

 creamy j^ellow; otherwise, like adults. 



AStdt male.—hength (skins), 2.56. .5-277 (268); wing, 110-117.5 (113); 

 tail, 118-131 (126); exposed culmen, 23-25.5 (25); depth of bill at nos- 

 trils, 9-10 (9..5); tarsus, 35.5-38.5 (37.5); middle toe, 20-22 (21).'* 



Ad>th female.—Length (skins), 246.-5-275.5 (258.5); wing, 104-116.5 

 (112); tail, 122-131.5 (127.5); exposed culmen, 24-25.5 (24.5); depth 

 of bill at nostrils, 10; tarsus, 34-39.5 (37.5); middle toe, 19.5-22.5 (20). « 

 Lower Rio Grande Valley, in southern Texas and northern Tamau- 

 lipas (Matamoras) and Nuevo Leon (San Diego, Rodriguez), from the 

 coast as far up the \'alley as Laredo, Texas. 



Cyanocorax luxuosus (not Garndus luxuosus Lesson) Baird, in Stansbury's Rep. 

 Gt. Salt Lake, 1852, 331 (Rio Grande, Texas).— Cassin, lUustr. Birds Cal., 

 Tex., etc., 1854, 1, part, pi. 1? (Texas). '> 

 Xanthoura luxuosa Baikd, Rep. Pacific R. R. Surv., ix, 1858, 589 (Rio Grande, 

 Texas; Matamoras, Tamaulipas; San Diego, Nuevo Leon); Rep. IT. S. and 

 Mex. Bound. Surv., ii, pt. ii, 1859, 21 (do.); Cat. N. Am. Birds, 1859, no. 

 442. — Dresser, Ibis, 1865, 495 (lower Rio Grande Valley). — ^Baird, Brewer, 

 and Ridgwayj Hist. N. Am. Birds, ii, 1874, pi. 42, fig. 1 (Nuevo Leon). — 

 American Ornithologists' Union, Check List, 1886, no. 483. — Bendire, 

 Life Hist. N. Am. Birds, ii, 1895, 383, pi. 3, figs. 15-17 (eggs).— Nehrling, 

 Our Native Birds, etc., ii, 1896, 326, pi. 32, fig. 5. — Singley, Rep. Geol. Surv. 

 Tex. 1894, 371 (Hidalgo). 

 Xlantltourdl hi.ruo.sa Ripgwav, INIan. N. Am. Birds, 1S87, .'!5S, part. 



« Seven specimens. 



''The plate is colored more like true X. /.u.rim.-td, and may have liecii made from a 

 specimen of that form. 



