° 1911 ] Chapman, A Neiv Oriole from Mexico. 3 



Merrill's statement (Proc. U. S. Nat. Mus., 1878, p. 135) to the 

 effect that this species nests "rather plentifully" at that point. 

 In view of the fact that breeding specimens from southern Texas 

 and from Mexico in the American Museum collection (see table 

 beyond) while smaller, as might be expected, show no appreciable 

 difference in color from specimens of Icterus spurius at the northern 

 limit of its range, it is not a little surprising that within a distance 

 of 250 miles, and with no very striking change in environment, 

 a difference as great as that exhibited by Icterus J'uertesi should 

 be shown. While the new bird, therefore, appears unquestionably 

 to be a representative of Icterus spurius, it probably does not 

 intergrade with that form, and I have no hesitation in describing 

 it as a distinct species. 



Icterus fucrtesi sp. nov. 



Fuertes's Oriole. 



Chars. Sp. — Most nearly related to Icterus spurius, but smaller with 

 the chestnut areas of that species replaced by a color which varies from 

 buff to ochraceous. Type, Coll. Am. Mus. Nat. Hist., 95909; Paso del 

 Haba, south shore of Tamesi River, 35 miles northwest of Tampico, 

 Mexico, April 6, 1910; collected and presented by Louis Agassiz Fuertes. 



Description of Adult Male (type). — Head, throat, center of chest, fore- 

 back and scapulars black, the two latter slightly edged with grayish brown; 

 rest of body, including upper and under tail-coverts, rich buff with a slight 

 yellowish cast, particularly medianly on the underparts (the color here is 

 much like the buffy tips to the fall plumage of adult males of Icterus spurius) , 

 and with a cinnamon shade on the rump; wings black, edged externally 

 with whitish, lesser, median, and under wing-coverts cinnamon-buff, 

 greater wing-coverts black, bordered terminally with white; tail black, 

 the outer feathers graduated and narrowly tipped with whitish. Wing, 71 ; 

 tail, 64; exposed culmen, 15 mm. 



Adult Female. — Similar in color to the corresponding plumage of Icterus 

 spurius but size smaller. Wing, 68; tail, 63.5; exposed culmen, 14.5 mm. 

 (No. 95908, Tamesi River, Mexico, April 7, 1910, F. M. C.) 



Immature Male. — Similar in color to corresponding plumage of Icterus 

 spurius, but smaller. Wing, 72; tail, 65.5; exposed culmen, 15 mm. 

 (No. 95907, Tamesi River, April 7, 1910, F. M. C.) 



