BIRDS OF NORTH AND MIDDLE AMERICA. 



409 



Adult male.—\j^\\g\h (skins), 99.1; wing, 58.9-59.7 (59.2); tail, 

 35. 6-38. 1(36. 8); exposed culmen (one specimen), 12.2; tarsus, 16.3-16.5; 

 middle toe, 10.1-10.9 (10.7).^ 



Adult female. — Length (skin), 91.1; wing, 52.6; tail, 31; exposed 

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

 . Island of San Miguel, Bay of Panama, Colombia. 



Coereba mexieana columbiana (not Certhiola colambiana Cabanis) Bangs, Auk, xviii, 



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

 Coereba cermodunis Bangs, Proc. New Engl. Zool. Club, ii, Feb. 8, 1901, 52 (San 



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



CCEREBA MEXICANA (Sclater). 



MEXICAN BANANAaUIT. 



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

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

 occiput; hindneck, l)ack, scapulars, and upper tail-coverts plain gray- 

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

 olive edgings; outer 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 hy 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 dusk}' 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, 25.1-36.1 (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: 



Locality. 



Middle 

 toe. 



Four adults from Mexico 



Six adults from Guatemala ... 



Eight adults from Nicaragua, Costa Rica, and Panama 

 Five adults from Colombia (Bogota) 



10.7 

 i0.7 

 11.4 

 10.9 



