1894. PROCEEDINGS OF THE NATIONAL MUSEUM. 367 



decided orange-red or flame-scarlet hue. Wing, 2.58 ; tail, 2.18 ; exposed 

 culmen, 0.47; tarsus, 0.75; middle toe, 0.38. 



Adult female (No. 439, coll. Dr. G. Baur, Indefatigable Island, 

 August G). — Color above quite the same as that of females from 

 Charles Island, but top of head with a decided yellowish tinge; super- 

 ciliary stripe, extending from nostrils to posterior angle of eye (broad- 

 est anteriorly), light buff-yellowish ; malar region, chin, and throat very 

 pale maize-yellow; rest of under parts light chrome, or deep Naples- 

 yellow — very different from the buff'-yellow of Charles Island speci- 

 mens. Wing, 2.38; tail, 2; exposed culmen, 0.40; tarsus, 0.70. 



Immature male (No. 463, same collection, Indefatigable Island, 

 August 7). — Very similar to the adult female, but rather darker above; 

 chin and throat white, faintly tinged with maize-yellow; rest of lower 

 parts rather deeper and decidedly '■'• warmer " yellow than in the adult 

 female (a very j)ale tint of " deep chrome "), rather paler on the chest, 

 where marked with very narrow shaft-streaks of dusky. Wing, 2.52; 

 tail, 2.05; exposed culmen, 0.45; tarsus, 0.71; middle toe, 0.40. 



An immature male (No. 77764. U.S.N.M., Indefatigable Island, 

 August 25-Oct. 16, Dr. A. Habel) is similar to that described above, 

 but has the yellow of the chest equally deep with that of more pos 

 terior under parts (the whitish throat being thereby more abruptly 

 defined) and the fine dusky streaks nearly obsolete. Wing, 2.40; tail, 

 2.02; exposed culmen, 0.45; tarsus, 0.70; middle toe, 0.39. 



Young i^o. 116053, U.S.N.M., Indefatigable Island, April 12; C. 

 H. Townsend). — Above dark grayish brown, the feathers of the back, 

 the scapulars, and the lesser wing-coverts narrowly and rather indis- 

 tinctly margined with i)aler; those of the rump and upper tail-coverts 

 nuich more broadly margined with brownish buff", which constitutes 

 the prevailing color; top of head broadly streaked with dusky on a 

 whitish and i)ale buffy ground, the forehead chiefly pale buffy; middle 

 and greater wing coverts broadly tipped with pale brownish buffy, 

 producing two wing-bands; tail feathers also broadly tipped with pale 

 dull buffy; remiges rather broadly margined at tips with whitish. 

 Supraloral region, malar region, chin, and throat whitish, tinged with 

 dull yellowish; rest of under parts light Naples-yellow, the chest, 

 sides, and flanks longitudinally flecked Avith grayish brown. 



22. PYKOCEPHALT't^ ABINGDONI, new spefies. 



Specific characters.— ^imiiav to P. carolen,sis, llidgway, in color of 

 back, etc., but red of under parts very different — flame scarlet or 

 orange-chrome instead of vermilion. (Female and young unknown.) 



Adult male (type, No. 116134, U.S.N.M., Abingdon Island, Gala- 

 pagos, April 16, 1888; C. H. Townsend). — Pileum intense scarlet or 

 scarlet-vermilion, paler, more orange-red, on forehead; entire under 

 parts orange-red ("orange-chrome"), the under tail-coverts paler, 

 inclining to salmon-color; ear-coverts, hind neck, back, etc., clove- 



