52 BULLETIN" 50, UNITED STATES NATIONAL MUSEUM. 



black and broadly tipped with, white, the white tip and subterminal 

 black area approximately equal in width on lateral rectrices but the 

 former gradually decreasing in width to the middle pair, on which 

 the white is very much narrower, sometimes almost wanting; chin, 

 throat, and upper chest salmon-buff, gradually deepening on sides of 

 head and neck into nearly the color of the pileum and hindneck; 

 rest of under parts plain pale bluish gray (nearest pearl gray), deepen- 

 ing into light slate-gray on under tail-coverts; under surface of 

 rectrices, anterior to the black subterminal area, light cinnamon- 

 rufous, in strong contrast; bill apple green (in life), slightly more 

 dusky basally, the inside of mouth blue-black; iris carmine or crimson; 

 legs and feet plumbeous." 



Young. — Similar to adults but middle pair of rectrices without 

 white tip and crossed by an indistinct subterminal band of dusky 

 brown (instead of black) . 



Adult maZe.— Length (skins) 431-477 (456); wing, 144.5-157 

 (149.9); tail, 285-330 (308.3); exposed culmen, 26-29.5 (27.8); tarsus, 

 36-39.5 (37.9); outer anterior toe, 23-25.5 (24.1).^ 



Adult female.— Length, (sldns), 406-490 (460); wing, 144-159.5 

 (152.4); tail, 272-335 (308.6); exposed culmen, 26-29 (27.5); tarsus, 

 35.5-39.5 (37.5); outer anterior toe, 23-26 (24.2).^ 



Western and southwestern Mexico, in States of Mexico (Temas- 

 c&ltepec), Oaxaca (JuquUa; Putla; Juchatengo; Tehuantepec), 

 Guerrero (Acapulco; Tlalixquatilla; Xautipa), Colima (Manzanillo; 

 Rio Tupila; Plains of Colima; Colima), Sinaloa (Plomosas; Arroyo 

 de Limones, 3,500 feet; Escuinapa; Mazatlan; Las Flores; Caletic), 

 Jalisco (San Sebastian; Juanacatlan; Barranca Ibarra; Hacienda San 

 Marcos; Zapotlan; Guadalajara; Bolanos; Ojo de Agua; Tuxpdn; 

 Volcdn de Fuego), Durango (Chacala), Michoacan (La Salada), 

 Guanajuato, and Puebla (Chietla), and Territory of Tepic (Santiago; 

 San Bias). 



(?) [Cucalus] ridibundus Gmelin, Syst. Nat., i, pt. i, 1788, 414 (based on CnculiLS 



mexicanus Bri^son, Orn., iv, 119). — Latham, Index Orn., i, 1790, 220. 

 (?) Coccyzus ridibundus Vieillot, Nouv. Diet. d'Hist. Nat., viii, 1817, 277 



(Mexico); Tabl. Enc. M6th., iu, 1823, 1348. 

 (?) Cueulus ridibundus Vieillot, Nouv. Diet. d'Hist. Nat., xxviii, 1819, 414. 

 (?) P[iaya] ridibunda Gray, Gen. Birds, ii, 1846, 457. 

 (?) [Piaya] ridibundus Bonaparte, Consp. Av., i, 1850, 111. 

 Piaya ridibundus (not Cueulus ridibundus Gmelin?) Lawrence, Mem. Bost. Soc. 



N. H., ii, 1874, 293 (Mazatlan; Rio Tupila; Plains of Colima); Bull. U. S. 



Nat. Mus., no. 4, 1876, 33 (Tehuantepec City, Oaxaca). 

 (?) [Piiloleptis] ridibundus Bonaparte, Ateneo Italiano, ii, 1854, 121 (Consp. 



Volucr. Zygod., 1854, 6). 

 Cueulus rubicundus Stephens, Shaw's Gen. ZooL, ix, pt. i, 1815, 109 (Mexico). 

 Cueulus mexicanus Swainson, Philos. Mag., n. s., i. no. 6, June, 1827, 440 (Temas- 



caltepec, Mexico; coll. Bullock Mus.). 



o According to P. L. Jouy. ^ Ten specimens. 



