BIRDS OP NORTH AND MIDDLE AMERICA. 53 



j. Black bars or spots on inner web of middle rectrices smaller, 

 usiially not touching shaft (sometimes reduced to small 

 irregular spots). (Santa Marta district^ northeastern Colom- 

 bia.) Centurus subelegans sanctSE-martae (extralimital)." 



jj. Black spots or bars on inner web of middle rectrices larger, 

 usually touching shaft. (Panama and Costa Rica.) 



Centurus subelegans wagleri (p. 73). 



ii. Black bars on back, etc., also those on middle rectrices, broader; 



prefrontal region orange-pinkish; general color of under parts 



more vinaceous; red of abdomen more extensive; wing 



shorter, bill larger. (San Miguel Island, Bay of Panama.) 



Centurus seductus (p. 75). 

 dd. Abdomen yellow or orange-yellow. 

 e. No black on side of head. 

 /. Tail shorter (53-61.5 mm.); wing 112-125.5 mm. (Nicaragua and Costa 



Rica.) Centurus hoffmannii (p. 76). 



/. Tail longer (63-85 mm.); wing 117.5-144 mm. 



g. Middle rectrices with much white on inner web, the outer web also 

 with more or less white. {Centurus polygrammus.) 

 h. Larger (averaging wing 138.9, tail 80.5, culmen 31 in male, wing 

 133.1, tail 76.1, culmen 27.2, in female); white bars on back, 

 etc., narrower (averaging about 1.5 mm. wide); rump and upper 

 tail-coverts usually immaculate white; yellow of abdomen 

 deeper and more extended; adult male with red crown-spot fre- 

 quently confluent with orange-red of nape. (Oaxaca and adja- 

 cent portion of Chiapas.) 



Centurus polygrammus polygrammus (p. 78). 

 hh. Smaller (averaging wing 133.6, tail 74.4, culmen 29.2, in male, 

 wing 130.6, tail 72.6, culmen 26.1, in female); white bars on 

 back, etc., broader (averaging about 2 mm. wide); rump and 

 upper tail-coverts always conspicuously barred with black, 

 yellow of abdomen paler and more restricted; adult male with 

 red crown-spot always (?) separated from orange or orange-yellow 

 nuchal area by an occipital band of gray. (Southeastern 



Chiapas.) Centurus polygrammus frontalis (p. 80). 



gg. Middle rectrices with little if any white (the outer web with none). 

 h. Back broadly barred with white (the bars averaging about 2 mm. 

 wide); primaries with much white on basal portion; under wing- 

 coverts mostly white; under parts much paler (pale buffy gray- 

 = ish), the yellow of abdomen paler; middle rectrices always 

 wholly black; nape yellow to orange, the adult male with red 

 crown-patch usually separated from color of nape by a gray 

 occipital band. (Texas and northern and middle Mexico, south 

 to States of Tamaulipas, Hidalgo, Guanajuato, Michoacdn, and 

 Jalisco.) Centurus aurlfrons (p. 81). 



"■ {1)CentwruB rubricajnllus Cabanis, Joum. fiir Orn., x, Sept., 1862, 328 (Barran- 

 quilla, Colombia; coll. Heine Mus.). — Melanerpes wagleri sanctse-martx Bangs, Proc. 

 Biol. Soc. Wash., xii, J\me 3, 1898, 134 (Santa Marta, Colombia; coll. E. A. and 

 0. Bangs). 



Comparison of a fine series of this form with an equally good one of M. s. wagleri 

 from Panamd and Costa Rica, fails to verify other characters given in the original 

 description. (See measurements on p. 74.) 



