298 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Icterus mentalis (not of Lesson) Cabanis, Mus. Hein., i, 1851, 185, footnote 

 (according to Sclater) . — Sclatee, Cat. Am. Birds, 1862, 134, excl. syn. (San 

 Geronimo, Guatemala). — Salvin and Sclatbk, Ibis, 1860, 275 (San Geron- 

 imo). — Owen, Ibis, 1861, 62 (descr. eggs). 



Icterus sdaieri Gassxu, Proo. Ac. Nat. Sci. Phila., Apr., 1867, 49 (San Juan and 

 Pres Granada, Nicaragua; San Geronimo, Guatemala; type, from Nicaragua, 

 in coll. Ac. Nat. Sci.). — Sclater, Ibis, 1883, 371 (monogr.); Oat. Birds Brit. 

 Mus., xi, 1886, 385 (San Ger6nimo, Guatemala; TonaU, Chiapas). — Salvin 

 and GoDMAN, Biol. Oentr.-Am., Aves, i, 1887, 476, pi. 33, fig. 1 (San Juan 

 del Rio, Santa Efigenia, and Juchintan, Oaxaca; Tonald, Chiapas; San Gero- 

 nimo, Guatemala; San Juan, Nicaragua) . 



[Icterus'] scfateri Sclater and Salvin, Nom. Av. Neotr., 1873, 36. 



Icterus fonnosus Lawrence, Ann. Lye. Nat. Hist. N. Y., x, May, 1872, 184 

 (Juchitan, Oaxaca; coll. U. S. Nat. Mus.) ; Bull. U. S. Nat. Mus., no. 4, 

 1876, 23 (do.).— Sclater, Ibis, 1883, 372 (monogr.). 



(?) Icterus pustulatus (not Psarocolius pusmlaius Wagler) Zeledon, Anal. Mus. 

 Nac. Costa Eica, i, 1887, 112 (Liberia, w. Costa Rica). 



ICTERUS GRAYSONII Cassin. 



GRATSON'S ORIOLE. 



Similar to I. pustulatus but much larger and lighter colored, and 

 the back either without black streaks or with only a few very narrow 

 ones. 



Adult male in summer. — General color, except wings and tail (but 

 including lesser wing-coverts), orange-yellow or saffron yellow (more 

 orange on anterior portion of head and space surrounding black throat- 

 stripe), the back sometimes with a few narrow streaks of black; lores, 

 anterior portion of malar region, chin, and throat black; lesser wing- 

 coverts rather lighter or clearer yellow; middle coverts still pater yel- 

 low, sometimes white, tinged with yellow, with part of inner webs 

 black; rest of wings black, varied by broad white edgings, except on 

 primary coverts, on basal half of outermost greater coverts and basal 

 portion of outermost secondaries, that on basal portion of primaries 

 occupying nearly full width of the outer web; tail black, the concealed 

 basal portion of the rectrices yellow (shafts white), and two or three 



ences, which, if constant, would necessitate the separation of the birds from Honduras 

 to Oaxaca as a subspecies. Icterus sclateri formosus. Measurements are as follows: 



