BIRDS OF NORTH AND MIDDLE AMERICA. 



409 



ASmU mafc.— Length (skins), 99.1; wing, 58.9-59.7 (59.2); tail, 

 35.6-38.1(36.8);exposedculmen(one specimen), 12.2; tarsus, 16.3-16.5; 

 middle toe, 10.4-10.9 (10. 7). ^ 



Adult female.— LL&n^^h (skin), 91.4; wing, 52.6; tail, 31; exposed 

 culmen, 12.4; tarsus, 15.2; middle toe, 9.7.^ 



Island of San Miguel, Bay of Panama, Colombia. 



Cxrtha mexicana columbiana (not Certhiola Columbiana Cabanis) Bangs, Auk, xviii, 



Jan., 1901, 30 (San Miguel I., Bay of Panama) . 

 Ccereba cerinodunis Bangs, Proc. New Engl. Zool. Club, ii, Feb. 8, 1901, 52 (San 



Miguel I., Bay of Panama; coll. E. A. and 0. Bangs). 



CCEREBA MEXICANA (Sclater). 



MEXICAN BANANAOTIT. 



Adults {sexes alike). — Pileum uniform sooty blackish, margined on 

 each side by a superciliary stripe of white, extending from nostril to 

 occiput; hindneck, back, scapulars, and upper tail-coverts plain gray- 

 ish olive, the wings and tail similar but slightly darker, with grayish 

 olive edgings; puter webs of four or five outermost primaries white at 

 base, usually showing as a spot, sometimes of considerable extent, 

 beyond tips of primary-coverts, sometimes wholly concealed by the 

 latter; inner webs of lateral rectrices tipped with white, forming on the 

 outermost a spot of variable size; rump olive-yellow, or light yellow- 

 ish olive-green; loral and auricular regions dusky or sooty, forming a 

 broad stripe on sides of head; malar region, chin, and throat uniform 

 light gray (no. 6 or no. 7);^ rest of under parts lemon yellow, more 

 or less tinged with olive, especially on sides, the flanks light yellowish 

 olive, the under tail-coverts dull whitish with pale grayish concealed 

 bases; under wing-coverts white, the edge of wing pale yellow; bill 

 blackish, the mandible usually more or less brownish basally; legs and 

 feet dusky horn color (in dried skins); length (skins), 79.2-98.3 (90.4); 

 wing, 51.3-59.9 (55.1); tail, 26.1-36.1 (31.8); exposed culmen, 11.7-14 

 (13.2); tarsus, 15.7-17.3 (16.3); miadle toe, 10.4-11.7 (10.9).* 



'Two specimens. 



* One specimen. 



"Ridgway's Nomenclature of Colors, pi. 2. 



* Twenty-three specimens. Unfortunately so few of these have the sex determined 

 that I am not able to give measurements of the sexes separately. 



Average measurements according to locality are as follows: 



