178 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



ZARHYNCHUS WAGLERI MEXICANUS Ridgway. 

 MEXICAU OROPENDOLA. 



Similar to Z. w. wagleri but averaging slightly smaller, especially 

 the hill; frontal shield narrower and less arched; chestnut of head 

 and neck slightly, that of rump and flanks decidedly, darker; black 

 of breast and abdomen more restricted, duller, less glossy. 



Admit mafe.— Length (skins), 330.2-368.3 (344.4); wing, 207-218.9 

 (213.6); tail, 124.5-132.6 (127.3); culmeu, 64-67.3 (65.5); greatest width 

 of frontal shield, 18.3-20.3 (19.6); tarsus. 37.6-38.6 (38.1); middle toe, 

 27.4-30(28.7).' 



Adult female.—ljengih. (skin), 243.8; wing, 147.3-154.2 (150.6); tail, 



98.8-99.1; culraen, 48-48.3 (48.1); greatest width of frontal shield, 



14.5-15.2 (14.7); tarsus, 31.8-32.5 (32); middle toe, 24.1-25.4(24.6).' 



Southern Mexico, in State of Vera Cruz (Motzorongo, Cerro de 



Defensa, etc.) to Guatemala; British Honduras?; Honduras?.^ 



Ocyalus wagleri (not Cacictis wagleri Gray) Sclater, Proc. Zool. Soc. Lond., 1857, 

 228 (Mexico); Cat. Am. Birds, 1862, 127 (Guatemala). — Sclatek and Salvin, 

 Ibis, 1859, 19 Gahaboii, Guatemala); 1870, 836 (San Pedro, Honduras)— 

 Moore, Proc. Zool. Soo. Lond., 1859, 57, (Chilomo, Honduras). — Salvin, 

 J .^Ibis, 1861, 141 (Lanquin, Guatemala). 

 Caskcus wagleri Cassin, Proc. Ac. Nat. Sci. Phila., 1867, 72, part (Mexico). 

 [.Ocyalus} wagleri Sclater and Salvin, Nom. A v. Neotr., 1873, 35, part. 

 Ocyalus waglerii Sumichrast, Mem. Bost. Soc. N. H., i, 1869, 553 (hot region. 



Vera Cruz). — Boucakd, Liste Ois. Guat., 1878, 35. 

 Eucorystes wagleri Sclater, Ibis, Apr., 1883, 147, part (s. Mexico; Guatemala; 

 Honduras; monogr. ); Cat. Birds Brit. Mus., xi, 1886, 312, part (Coban and 

 Choctum, Guatemala; s. Mexico). — Salvin and Godman, Biol. Centr.-Am., 

 Aves, i, 1886, 436, part (Cerro de la Defensa, Vera Cruz; Cahabon, Lanquin, 

 and Choctum, Guatemala; Chilomo and San Pedro, Honduras). 

 Zarliynchus wagleri mexicanns Ridgway, Proc. Wash. Acad. Sci., iii, Apr. 15, 

 1901, 151 (Motzorongo, Vera Cruz, Mexico; coll. U. S. Nat. Mus.). 



Genus GYMNOSTINOPS Sclater. 



Oymnostinops* Sclater, Cat. Birds Brit. Mus., xi, 1886, 309, 312. (Type, Cacicm 

 montezuma Lesson. ) 



Very large arboreal Icteridae with bill longer than head, straight, 

 acute elongate-conical, with basal outline of mandibular rami nearly 

 vertical, straight or slightly concave, the basal portion of culmen more 

 or less expanded, forming a somewhat flattened frontal shield; cheeks 

 and space on sides of throat naked; coloration black and chestnut, or 

 olive-yellowish, with tail mostly yellow. 



' Five specimens. 



^Two specimens. 



'I have not seen specimens from any portion of the district between Guatemala 

 and Costa Rica. Judging, however, from the case of other species which vary 

 between southern Mexico and the Isthmus of Panama, specimens from British Hon- 

 duras and Honduras are most likely to be referable to the northern form; those from 

 Nicaragua to the southern one. 



* " -yvpivoi naked, d6TEiv6<; bony, oaip face." 



