76 BULLETIN 50, TJITITED STATES NATIONAL MUSEUM. 



Adult fermle.— Length (skins), 145-171 (155); wing, 100-104.5 

 (102.1); tail, 46-51.5 (48.3); culmen, 21.5-23 (22.4); tarsus, 17-18.5 

 (17.9); outer anterior toe, 16-17 (16.5)." 



San Migudl Island, Bay of Panama. 



Malanerpes seductus Bangs, Auk, xviii, Jan., 1901, 26 (San Miguel Island, Bay 



of Panama; coll. E. A. and O. Bangs). 

 Melanerpes seductus Thateh and Bangs, Bull. Mus. Comp. Zool., xlvl, 1905, 



150 (San Miguel Island; erit.). 



CENTURUS HOFFMANNI Cabanis. 



HOFFMAiriT'S WOOSFECKEB. 



Most like C. polygrammus frontalis but much smaller, with tail 

 relatively shorter; under parts decidedly darker and more yellowish 

 gray, yellow of abdomen much deeper and much more extended, 

 sub-basal portion of outer web of primaries much less heavily marked 

 with white, lower rump and upper tail-coverts usually immaculate 

 white, less white on middle rectrices, and adult male with red crown- 

 patch larger and frequently confluent with the yellow or orange 

 of nape. 



Adult male. — Postnasal region pale cadmium or chrome yellow; 

 forehead and anterior portion of superciliary region dull white, pass- 

 ing into light yellowish mouse gray or light drab-gray on supra- 

 auricular region; crown bright poppy red, usually margined pos- 

 teriorly by a more or less broad and distinct occipital band of light 

 yellowish gray (confluent with the similar color of the supra-auricular 

 region) but sometimes in contact with, or merging into, the bright 

 cadmium yellow or orange (more rarely chrome yellow) of nape; 

 back, scapulars, and upper rump regularly and sharply barred with 

 black and white, the white bars averaging about 1.5-2 mm. in 

 width and slightly narrower than the black ones; lower rump and 

 upper tail-coverts white, usually immaculate; wings black, the 

 coverts and secondaries conspicuously barred with white (the black 

 interspaces broader than on back, etc.), the primaries spotted with 

 white on sub-basal portion and (except outer quiUs) margined ter- 

 minally with white; tail black, the middle pair of rectrices with 

 iimer web broadly barred or indented with white, the outer web 

 with a longitudinal, usually wedge-shaped, streak of white on basal 

 half (more or less), the two lateral pairs narrowly tipped or termi- 

 nally margined with white, the outermost with distal portion of 

 outer web barred or indented with white; auricular region, sides of 

 neck, foreneck, chest, breast, and sides plain yellowish drab-gray 

 fading into dull grayish, buffy white, or yellowish white on throat, 

 chin, and malar region, and passing into bright saffron, Indian, or 

 cadmium yellow on abdomen; flanks and under tail-coverts dull 



o Eight specimens. 



