NO. 1116. PROCEEDINGS OF THE NATIONAL MUSEUM. 661 



uiiiibrm posterior to the back, the color li^ihter and more distinctly 

 bnlfy on the lower rniup; wings and tail dusky grayish brown, the 

 feathers with distinct lighter margins (very narrow^, and pale olive-gray 

 on the primaries), the middle and greater coverts tipped with dull buff, 

 forming two fairly distinct bauds.' A superciliary stripe (disapi)earing 

 above the ear coverts), and general color of under parts pale yellowish 

 bufl", shaded with brownish along the sides and flanks, where obsoletely 

 streaked (most distinctly on flanks) with dusky olivaceous; under wing- 

 coverts white, tinged, especially along edge of wing, with pale cream- 

 yellow. 3Iaxilla light cinnamon with dusky tip; mandible verj- pale 

 brownish buffy; "iris dark brown;" legs and feel blackish brown. 

 Length (skin), 4.30; wing. 2.50; tail, 1.50; culinen, 0.53; gouys, 0.29; 

 width of mandible at base, 0.29; tarsus, 0.82; middle toe, 0.57. 



The bird described above is absolutely similar in plumage to C. sal 

 vini, of Chatham Island, but is nearly as large as G. comjrre.ss'u'osfris. 

 Were these two species found together on the same island, I would be 

 disposed to consider the present bird a hybrid; but manifestly this can 

 not be the case. It is possible that a larger series of specimens would 

 run C. com2jressiyostris and G. incertus together, in which case there 

 would be another form common to the two islands of James and Jer- 

 vis; but for the present I have to consider them as different. 



CAMARHYNCHUS SALVINI, Ridgway. 

 (I'latf LVI, Jig. 9.) 



Cam<(rhi/)uluis prosthemelas (nee Sclater and Salvin), Sundevall, Proc. Zool. 



Sue, 1871, p. 125, part (Chatham Island).— Ridgway, Proc. U. S. Nat. Mns., 



XII, 1889, p. 110, part (Chatham Island). 

 Camarhynclins aalv'tni, Pidgway, Proc. U. S. Nat. Mns., X^ II, No. 1007, Nov. 15, 



1894, p. 364 (Chatham Island, Galapagos Archipelago; collection U. S. Nat. 



Mns.). 



Specific characters. — Similar to G. prosthemelas, Sclater and Salvin, 

 of James, Indefatigable and Charles islands, etc., but larger, more 

 strongly tinged with buffy yellow and more extensively streaked beneath, 

 the adult male apparently without any black, on head, neck or chest. 

 Wing, 2.45-2.G3; tail, 1.45-1.58; culmen, 0.48-0.52; tarsus, 0.81-0.88. 



Range. — Galapagos Archipelago: Chatham Island (Kinberg, Town- 

 send, Baur and Adams). 



Adult ( ?) male ( icorn plumage). — Tyi)e, No. 125977, U.S.X.M. ; Chatham 

 Island, Galapagos, March 30, 1891 ; C. H. Townsend. Above, including 

 pileum, dusky olive, the feathers with lighter olive edges, producing an 

 indistinctly streaked appearance; rectrices edged with more yellowish 

 olive; under parts dull butty whitish, the chest, sides, and flanks 

 streaked with dusky (most distinct on chest, least so on flanks, where 



' The molt is nearly complete, but a few of the outermost greater wing-coverts 



belong to the nnmolted lilumage. These old feathers, perhaps representing an 



immature dress, corresponding to that described under C. psiitaculus, are margined 



both laterally and terminally with dull whitish, only very faintly tinged with buff, 



Proc. N. M. vol. xix 3G 



