248 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Adult female. — Length (skins), 245; wing, 121-125 (123); tail, 114- 

 117 (115.5); exposed culmen, 26.5-27 (26.7); tarsus, 38-38.5 (38.2); 

 middle toe, 22." 



Galapagos Archipelago (Gardner Island, near Charles; Champion 

 Island) fi 



Orpheus trifasciatus Gould, Proc. Zool. Soc. Lond., 1837, 27 (Galapagos Islands; 



coll. C. Darwin, now in coll. Brit. Miis.). 

 Mimus trifasciatus Gray, Zool.Voy.' 'Beagle," iii, 1841, 62, pi. 16 (Charles Island). — 



ScLATER, Proc. Zool. Soc. Lond., 1859, 345 (monogr.). — Salvin, Trans. Zool. 



Soc. Lond., ix, pt. ix, 1876, 471.— Sharpe, Cat. Birds Brit. Mus., vi, 1881, 346. 

 M[imus] trifasciat^(s Sundevall, Proc. Zool. Soc. Lond., 1871, 127 (crit.). 

 [Mimits] trifasciatus Bonaparte, Consp. Av., i, 1850, 277. — Gray, Hand-list, i, 



1869, 262, no. 3827.— Sclater and Salvin, Noin. Av. Neotr., 1873, 3. 

 Nesomimus trifasciatus Ridgway, Proc.U. S. Nat. Mus., xix, 1896, 483 (monogr.). — 



Rothschild and Hartert, Novit. Zool., vi, 1899, 128, 143 (crit.; Gardner I., 



near Charles). — Snodgrass and Heller, Proc. Wash. Ac. Sci., v, 1904, 358 



(Gardner, near Charles; "extinct on Charles," crit.). 

 N[esomimus] trifasciatus Rothschild and Hartert, Novit. Zool., vi, 1899, 200 



(Gardner I., near Charles). 

 [Nesomimus] trifasciatus Rothschild and Hartert, Novit. Zool., ix, 1902, 416 



(Gardner I. near Charles). — Sharpe, Hand-list, iv, 1903, 104. 



NESOMINUS MACDONALDI Ridgway. 

 HOOD ISLAND MOCKINGBIRD. 



Adults (sexes alike). — General color of upper parts light brownish 

 gray, more buffy (light broccoli brownish) on Bump, the feathers of 

 pileum and rump, scapulars, and interscapulars dark sooty slate or 

 didl blackish centrally, these dark centers very large on dorsal region, 

 where the feathers are merely margined with gray ; upper tail-coverts 

 darker brownish gray, margined with paler; tail brownish black or 

 dusky, the rectrices narrowly edged with grayish, the inner webs of 

 outermost rectrices dull whitish on inner terminal portion, produc- 

 ing an ill-defined spot;' wings dull blackish, the middle and greater 

 coverts and tertials broadly margined at tips with white, the greater 

 coverts and tertials edged with pale buffy gray, the primaries more 

 narrowly edged with gray, becoming white in middle portion; lesser 

 coverts light gray, blackish centrally, this mostly concealed, except on 

 last row, which, like the middle and greater coverts are broadly mar- 

 gined or tipped with white; an ill-defined but rather distinct super- 

 ciliary stripe of very pale gray or grayish white; lores and suborbital 

 region dull blackish or dusky; auricular region partly pale grayish, 



«Two specimens from Gardner Island, near Charles. 



^A male and female from Champion Island agree with those from Charles Island in 

 coloration but are slightly smaller, their measurements being as follows: 



Male. — Wing, 121; tail, 112; exposed culmen, 26.5; tarsus, 41; middle toe, 22.5. 



Female. — Wing, 117; tail, 111; exposed culmen, 27; tarsus, 39; middle toe, 21. 



cThis marking less developed on the second and disappearing on third or fourth 

 rectrix. 



