No.nie. PROCEEDINGS OF THE NATIONAL MUSEUM. 575 



PYROCEPHALUS INTERCEDENS, Ridgway. 



ri/rocephahis nanus (nee Gould), Sclater and Salvin, Proc. Zool. Soc^ 1870, p. 



323 (part: Indefatigable Island).— Sundevall, Proc. Zool. Soc, 1871, p. 125 



(part: Indefatigable Island).— Salvin, Trans. Zool. Soc., IX, Pt. ix, 1876, p. 



492 (part: descriptions).- Ridgway, Proc. U. S. Nat. Mus., XII, 1889, p. 112 



(Indefatigable Island). 

 Pj/rocephalm intcrcedens, Ridgway, Proc. U. S. Xat. Mus., XVII, No. 1007, Nov. 



15, 1894, p. 3(56 (Indefatigable Island, Galai)agos Arcbipelago; collection of 



Dr. G. Baur). 



S2)eclfic characters. — Similar to P. nanus, Gould, of James Island, but 

 female much brighter yellow beneath, browner above, and top of head 

 more tinged with yellow. 



Range. — Galapagos Archipelago: Albemarle Island (Baur and 

 Adams); Indefatigable Island (Darwin f, Kinberg, Habel, Albatross, 

 Baur and Adams). 



Adult male. — Type, Xo. 418, collection of Dr. G. Baur; Indefatigable 

 Island, August 5, 1891. Pileuu) rich poppy red, the feathers paler 

 beneath the surface and white basally; rest of upper parts, together 

 with a band along side of head, involving lores, suborbital region and 

 auricular region brownish black or very dark blackish brown. Chin, 

 throat, iind chest rich scarlet- vermilion, the remaining under parts 

 more orange red, or flame scarlet — all the feathers of the under parts 

 white basally. Bill black, the mandible more brownish; legs and feet 

 black. Wing, 2.58; tail, 2.18; exposed culmen, 0.47; tarsus, 0.75; 

 middle toe, 0.38. 



Adult female. — Ko. 439, collection of Dr. G. Baur ; Indefatigable Island, 

 August G, 1891. Above deep hair brown, the i)ileum strongly tinged 

 with yellow; superciliary stripe, extending from nostrils to posterior 

 angle of eye (broadest anteriorly), light buff- yellowish; malar region, 

 chin, and throat very pale maize yellow; rest of under j^arts light 

 chrome, or deep naples yellow. Wing, 2.38; tail, 2; exposed culmen, 

 0.40; tarsus, 0.70. 



Immature male. — Xo. 4G3, 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 pale 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-October 10, Dr. A. Habel) is similar to that described above, 

 bnt 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. 



Joung.—^o. 116053, U.S.N.M.; Indefatigable Island, April 12; 0. H. 



