530 BIRDS OF THE GALAPAGOS ARCEIPELAGO—RIDGWAT. volxix. 



with belly and flauks streaked or intermixed with whitish, and rump 

 grayish olive; adnlt females plain pale grayish buffy beneath or with 

 only the chest streaked; young (females at least) also plain i)ale gray- 

 ish butty beneath. Wing, about 2.25-2.35; tail, 1.30-1.42; culmen, 

 0.45-0.48; depth of bill at base, 0.30-0.31; tarsus, 0.70-0.72. 



Raiuje. — Galapagos Archii)elago: Chatham Island (Kinberg, T<twn 

 send); i I'.arrington Island (I>anr and Adams); ? Indefatigable Island 

 (Baur and Adams); James Island (Darwin); Eindloe Island (llabel); 

 Abingdon Island (Habel, Albatross). 



AfJidi (?) vuile.^ — No. 77755, T'.S.N.M.; Abingdon Island, Galapagos, 

 November 15-30, 1868; Dr. A. llabel. Upper parts, head, neck, and 

 chest uniform sooty black, more dusky brown posteriorly, the rum}) 

 dull grayish olive; rest of under parts sooty blackish, indistinctly 

 streaked with ])ale butty grayish, the under tail coverts butty white 

 with a central sagittate mark of dusky and the basal half clear slate- 

 gray. Bill wholly black; legs and feet blackish brown. Length (skin), 

 3.55 (before skinning), 4.50; wing, 2.35; tail, 1.30; culmen, 0.48; gonys, 

 0.25; basal width of mandible, 0.25; basal depth of bill, 0.31; tarsus, 

 0.73; middle toe, 0.53. 



Younger male. — No. 77754, U.S.N.^r.; same locality, etc. Dark 

 grayish brown or sooty, the under parts narrowly streaked with dull 

 brownish white; maxilla brownish black, mandible dark brownish; 

 legs and feet blackish brown. Length (skin), 3.40; wing, 2.25; tail, 

 1.30; culmen, 0.48; gonys, 0.25; basal width of mandible, 0.25; basal 

 depth of bill, 0.30; tarsus, 0.70; middle toe, 0.53. 



Adult female.—^ o. 115955, U.S.N.M.; Chatham Island, April 5, 1888, 

 C. n. Townsend. Above nearly uniform dull grayish brown, the wing- 

 feathers margined with paler, especially middle and greater coverts; 

 under parts very pale grayish butty, or bufl'y grayish white, the chest 

 (only) with a few indistinct streaks of grayish brown; maxilla blackish 

 brown, mandible paler; legs and feet dark horn brown. Length (skin), 

 3.85; wing, 2.32; tail, 1.42; culmen, 0.45; gonys, 0.23; basal width of 

 mandible, 0.25; basal depth of bill, 0.30; tarsus, 0.72; middle toe, 0.50. 

 You n(i female?. — No. 115954, U.S.N.M.; same locality, etc. Essen- 

 tially like the adult female, but more tinged with butty olive above and 

 with centers of feathers on pileum and back slightly darker, producing 

 obsolete streaks or spots; under parts wholly immaculate plain pale 

 grayish butty ; bill light brown, the mandible paler; legs and feet deep 

 horn-brown. 



There are three other specimens, young birds, from Abingdon Island 

 that are unstreaked pale grayish butty beneath, and which are therefore 

 unquestionably referable to G.parvula ; none of them are sexed. There 

 are also six young birds from the same localitj^ that are equally small, 

 but which have the under parts much streaked with dusky (the chin 



' This spociiiien is in worn iiiul (adod midsiiiuuipr pluiuago. Having no specinunis 

 from James Island, I am unable to describe exauii)les from the type locality. 



