178 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



ZARHYNCHUS WAGLERI MEXICANUS Ridgway. 

 MEXICAN OROPENDOLA. 



Similar to Z. ir. irayh r! but avoragintr ,sli<^htly smaller, especially 

 the bill; 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. 



Adult ;y^rt/t.— Length (skins), 83(».!>-;3(>8.3 (344:.4); wing, 207-218.!) 

 (213.6); tail, 124.5-132.6 (127.3); culmen, 61-67.3 (6.5.. 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.— IjQngih (skin), 243.8; wing, 147.3-154.2 (150.6); tail, 

 98.8-99.1; culmen, 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 ivagleri (nut Qtcirns irag/nri Gray) Sclater, Proc. Zool. Soc. Loud., 1857, 

 228 (Mexico); Cat. Am. Birds, 1862, 127 (Guatemala). — ScL.vTERandSALviN, 

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

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

 Ibis, 1861, 141 (Lanquin, (Uiatemala). 



Cassiciis wnglcrl C Ainu's, Proc. Ac. Nat. Sci. Phila., 1867, 72, part (Mexico). 



{Oci/alus} ivagltri Sclatek and Salvin, Nom. Av. Neotr., 1878, H5, part. 



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

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



Eucorystcs wagleri Scl.vter, 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 Clioctum, Guatemala; Chilomo and San Pedro, Honduras). 



Zarhynclms vaglcri inexicanus Ridgway, Proc. Wash. Acad. Sci., iii, Apr. 15, 

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



Genus GYMNOSTINOPS Sclater. 



Gyniiiostinoj»f* Sclater, Cat. Birds Brit. Mus., xi, 1886, .309, 312. (Type, ('acints 

 inontezuma Lesson. ) 



Very large arboreal Icteridte 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-3'ellowish, with tail mosth' yellow. 



^ Five specimens. 



^Two specimens. 



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

 and Costa Rica. Judging, however, from the case of other sjx'cies which vary 

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

 duras and Honduras are most likely to l)e referable to the northern form; those from 

 Nicaragua to the southern one. 



* ^^ yvf-ivoc, naked, ddzeivoi bony, c^ip face." 



