BIEDS OF NORTH AND MIDDLE AMERICA. -187 



8.13-8.89 {S.(d4:); tarsus, 20.57-22.61 (21.81:); middle toe, 12.70-14.73 

 (13.97).^ 



Female.— length (skins), about 99.06-102.87; wing, 62.23-63.25 

 (62.74); tail, 36.83-38.10 (37.59); culmen, 12.19-12.70 (12.45); gonys, 

 6.35; width of mandible at base, 6.60-7.11 {6.Sid)\ depth of bill at base, 

 8.13-8.89 (8.38); tarsus, 20.83-22.10 (21.59); middle toe, 13.46-13.97 

 (13.72).'^ 



Galapagos Archipelago (Chatham Island). 



Camarhynchus jyrosihemelas (not of Sclater and Salvin) Suxdevall, Proc. Zool. 



Soc. Lond, 1871, 125, part (Chatham I.). — Ridgway, Proc. U. S. Nat. Mus., 



xii, 1889, 110, part (Chatham I.). 

 Camarhynehus salvini Ridgway, Proc. U. S. Nat. ^lus., xvii, no. 1007, Nov. 15, 1894, 



364 (Chatham I., Galapagos Archipelago; collection U. S. Nat. Mus.) ; xix, 



1897, 561, pi. 56, fig. 9 (monogr.). 

 Geospiza salvini Rothschild and Hartert, Novit. Zool., vi, Aug., 1899, 169 (crit.) . 



CAMARHYNCHUS PALLIDUS (Sclater and Salvm) 

 PALLID GROUND FINCH. 



Bill slender, its depth at base decidedly less than distance from 

 nostril to tip of maxilla. 



Adult male. — xlboye ash gray, more brow^nish on lower back and 

 rump, the central portion of the feathers darker, especially on the 

 crown; wings and tail deep brown, with narrow edgings of grayish, 

 the inner webs of remiges and rectrices rather broadly edged with 

 white; under wing-coverts white, slightly tinged with yellow; under 

 parts white, slightly tinged with buff, the flanks shaded and faintly 

 striped with brown; chest more strongly tinged with brownish buff', 

 the basal portion of the feathers blackish gra}^; bill horn black; iris 

 brown; feet blackish. 



Adult female {'i).—'6vA\i\ii\- to the adult male, but slightly more 

 brownish and more uniform above. 



Immature male and female (?)• — Similar to the adult (0 female, but 

 more olive above, the under parts bufly yellowish, with lower throat, 

 chest, and sides are less streaked with dusky ;^ bill pale brownish, the 

 mandible paler and more yellowish. 



^ Seven specimens, two of them immature. 



'■^ Three specimens, one immature. Messrs. Rothschild and Hartert give measure- 

 ments of a large series of this species, in the Tring Museum collection, as follows: — 



Male.—\Nu\g, 66.00-67.00; culmen, 11.50-12.00. 



Female.— V^'mg, 63.00-65.00; culmen, 11.00-11.50. 



3 See Rothschild and Hartert, Novit. Zool., vi, 1899, p. 166, who remark: "The 

 birds which are olive above and huffish -'ellow below are immature ones, but it is 

 somewhat puzzling to accottnt for the distinct blackish brown stripes on the lower 

 throat, chest, and sides of the body in some of them. Neither the apparently most 

 adult ones, nor the most yellowish, and therefore, according to our view, youngest 

 of our series, have these stripes well developed. These striped birds may be the 



