BIRDS OF NOETH AND MIDDLE AMERICA. 241 



Quisccdus major, var. macrurus Baikd, Brewer, and Ridgway, Hist. N. Am. 

 Birds, ii, 1874, 225. 



Quiscalus major macrurus Goode, Bull. U. S. Nat. Mus., no. 20, 1883, 339. 



Qwiscalus assimilis (not of Sclater, 1862?) Sclater, Ibis, 1884, 156, part (Veragua; 

 Panama); Cat. Birds Brit. Mus., xi, 1886, 396, part (Calobre and Calove- 

 vora, Veragua; Lion Hill, l^anama R. R.). — (?) Salvador:, Boll. Mus. Zool., 

 etc., Torino, xiv, 1899, no. 339, 5 (Punta de Sabana, Isthmus of Panama). 



\_QuAacalus\ assimilis Sclater and Salvin, Nom. Av. Neotr., 1873, 38, part (Vera- 

 gua; Panama). 



MEGAQUISCALUS MAJOR OBSCURUS (Nelson). 

 COLIDTA BOAT-TAIL. 



Similar to M. m. macrourus, but much smaller (except feet), with 

 relatively shorter and much thicker bill; adult male identical in color- 

 ation with that of M. m. macrourus; adult female decidedly darker 

 than that of M. m. macrourus, the chin and throat broccoli brown or 

 deep wood brown (instead of buffy), passing into deep broccoli brown, 

 or almost bister on chest. 



, Adult maZe.— Length (skins), 381-388.6 (386.3); wing, 178.3-180.8 

 (179.8); tail, 1842-190.5 (188.5); culmen, from base, 41.4-41.9 (41.7); 

 depth of bill at base, 14.6-15 (14.7); tarsus, 47.8^8.3 (48); middle 

 toe, 34.3-35.1 (34. 5). ^ 



Adult fmMle.—Le,ngt\i (skins), 298.5-330.2 (314.6); wing, 139.7- 

 149.1 (144); tail, 124.5-151.9 (138.2); culmen, from base, 33.5-35.6 

 (34.5); depth of bill at base, 11.4-12.4 (11.9); tarsus, 38.9-41.1 (40.4); 

 middle toe, 27.9-31.2 (29.2).' 



Coast district of southwestern Mexico, from State of Guerrero (Aca- 

 pulco) through Colima (Manzanillo; Manzanillo Bay) to Territory of 

 Tepic (Ixtapa, Tepic, Santiago, San Bias, etc.). 



Quiscalus major (not of Vieillot) Cassin, Proc. Ac. Nat. Sci.Phila., 1866, 409, part 

 (Colima, s.w. Mexico). — Lawrence, Mem. Bost. Soc. N. H., ii, 1874, 281 

 (Manzanillo Bay and plains of Colima). 



Quiscalus macrourus ohscwrus Nelson, Auk, xvii, July, 1900, 267 ( Acapulco, Guer- 

 rero, s. w. Mexico; coll. U. S. Nat. Mus.). 



Scaphidunis major obscurus Ridgway, Proc. Wash. Ac. Sci., iii, Apr. 15, 1901, 152. 



MEGAQUISCALUS MAJOR GRAYSONI (Sclater). 

 GRAYSON'S BOAT-TAILED GRACKLE. 



Similar to M. m. obscurus, but decidedly smaller and with relatively 

 shorter tail (usually decidedly shorter and never much longer than 

 wing, instead of the reverse); adult male similar in coloration to M. m. 

 obscurus and M. m. mavrourus, but less extensively violet anteriorly, the 

 breast, sides, and back being chiefly steel blue; .adult female much paler 

 than in the before-mentioned forms; scarcely distinguishable as to col- 



1 Three specimens. ^ Four specimens. 



3654— VOL 2—01 16 



