BIEDS OF NORTH AND MIDDLE AMERICA. 269 



[Jdent-s] wagleri Sclater and Salvin, Nom. Am. Neotr., 1878, 36. 



Jlderus'] wagleri Ridgway, Man. N. Am. Birds, 1887, 375. 



Icterus vnglerii Sumichrast, Mem. Bost. Soc. N. H., i, 1869, 552 (hot region, 



Vera Cruz) . 

 Pendulinns wagleri Cassin, Proc. Ac. Nat. Sci. Phila., 1867, 55 (monogr. ; Coa- 



huila; Mazatlan; San Geronimo, Guatemala). 

 \_Icterus dommicensis] var. tvaglero, B.iiRD, Brewer, and Ridgway, Hist. N. Am. 



Birds, ii, 1874, 182. 

 Icterus wagleri castaneopectus Brewster, Auk, v, Jan., 1888, 91 (Oposura, Sonera; 



ooU. W. Brewster) . 



ICTERUS PROSTHEMELAS (Strickland). 

 LESSON'S ORIOLE, 



Similar to 1. iiiaglerl but iimch smaller, black of chest extend- 

 ing" over breast, and tail-coverts (both upper and lower) mostly 

 j^ellow/ 



Adults {sexes alike). — Head, neck, chest, upper breast (sometimes 

 whole ])reast), back, scapulars, wing-s (except lesser and middle 

 coverts), and tail black; rest of plumage deep lemon yellow, the yel- 

 low of the lireast mor(^ or less tinged or mixed with chestnut next to 

 edge of black pectoral area; longer tail-coverts usuall}' more or less 

 mixed with black, sometimes wholl}" black; bill ))lack, with basal por- 

 tion of mandible bluish gray (pale g^rayish l)lue in life';!); legs and feet 

 grayish dusky or dark grayish horn color (bhush gray in life'O 



Lninatiure {second yeai' f). — Similar to adults, but back and scapulars 

 yellowish olive-green^ (some of the feathers with concealed central 

 areas of black), the lower hindneck more yellowish olive-green, or 

 olive-yellow (whole hindneck and occiput sometimes of this color). 



Young {Jirst plumagt'). — Forehead (more or less broadly), orbital 

 region, auricular and malar regions (except sometimes posterior portion 

 of the former), chin, throat, and median portion of upper chest dull 

 black; rest of head and neck, together with back, scapulars, rump, 

 and upper tail-coverts, dull olive-yellow or light yellowish olive-green, 

 the back and scapulars more or less clouded or blotched with black; 

 wings and tail dull black, the lesser and middle wing'-covcrts tipped 

 with dull olive-yellow or light yellowish olive-green; under parts 

 (except throat, etc.) light yellow (dull canary yellow or straw yellow). 



Adxdt wa/e^— Leng-th (skins), 180.3-207 (191.3); wing, 78.5-93.5 

 (86.6); tail, 84.6-100.8 (93.2); culmen, from base, 19.1-21.3 (20.6); 

 depth of bill at base, 7.1-8.1 (7.6); tarsus, 22.1-23.6 (22.9); middle 

 toe, 11.7-17.8 (16.3).^ 



Adxdt female.— \^ii\\gi\x (skins), 180.3-195.6 (190.8); wing, 80.3-85.1 

 (83.1); tail, 81.1-90.7 (87.6); culmen, from base, 19.6-21.6 (20.6); 



^ The longer coverts sometimes black or partly so, especially the upper coverts. 

 ■'' In this i)lumage very closely resenibling in coloration adults of J. melanocephalus, 

 3 Twenty-one specimens. 



