BIRDS OF NORTH AND MIDDLE AMERICA. 767 



Another adult inulo (no. 11(!1()1. coll. U. S. Nat. Mas., obtained April 

 16) has the mandible distinetl}' lioht colored, except at tip, thus show- 

 ing* the color of the bill to be an inconstant feature in tliis as well as 

 in some other species of the genus. 



Young. — Above similar to adult, but rather browner, and feathers, 

 especially on back, hindneck, and pileum, showing in certain lights 

 very indistinct narrow terminal bars of duskj^; beneath much as in 

 adult, but sides of head and neck, throat, and chest more grayish; 

 sides and lianks faintly mottled with light grayish l)rown, the tianks 

 tinged with pale butfy.' 



Galapagos Archipelago (Abingdon and Bindloe islands). 



Certlddea fusai Sclater and iSai.vin, Proc. Zool. Soc. Lond., 1870, 323, 324 (Abing- 

 don and Bindloe islands, Galapagos Archipelago; coll. Salvin andGodman). — 

 Salvin, Trans. Zool. Soc. Lond., ix, pt. ix, 187(5, 477. — Sclater, Cat. Birds 

 Brit. Mus., xi, 1886, 28.— RiixiWAv, Proc. U. S. Nat. Mus., xii, 1889, 105, 

 119, 123, 124, 126 (Abingdon Island); xix, 1897, 502 (monogr.). 



[CerUddea'] /itsea. Sclater and Salvin, Noni. Av. Neotr., 1873, 16. 



Certhidea ollvacea fusca Rotflsciiild and Haktert, Novit. Zool., vi, Aug., 1899, 

 151 (Abingdon and Bindloe islands). 



CERTHIDEA BECKI Rothschild. 



WENMAN ISLAND CERTHIDEA. 



Similar to C. fused, but darker, esi)ecially on sides and Hanks; wing 

 longer, (56, nearly 59 mm., in males, 5;^-54 mm. in females), but l>ill 

 shorter (S-9 mm.); adult male sometimes with an ochraceous patch on 

 throat, the adult female sometimes with the throat tinged with ochra- 

 ceous. Diti'ering from C olicaccu in being darker above, darker and 

 browner on chest, Hanks, and sides of breast, and in the adult males 

 not having the throat rufous-cinnamon." 



Galapagos Archipelago (Wenman Island). 



Certhidea becki Rothschild, Bull. Brit. Orn. Clul), no. liv, May 25, 1898, p. liii 

 (Wenman Island, Galapagos Archipelago; coll. Tring Mus.). 



CertJtided uUcacea becki Rothschild and Haktert, Novit. Zool., vi, Aug., 1899, 149 

 (crit.). 



CERTHIDEA DROWNEI Rothschild. 



CULPEPPER ISLAND CERTHIDEA. 



Similar to C. hcck/\ but larger (wing, ()!2nnn., in adult male, 57 mm., 

 in adult female); sides of l)reast darker, more olivaceous; pileum 

 darker; length of bill from nostril to tip of ma.xilla, 8-9 nmi.' 



Galapagos Archipelago (Culpepper Island). 



Certhidea drovmei Rothschild, Bull Brit. Orn. Club, no. liv. May 25, 1898, p. 



liii (Culpepper Island, Galapagos Archipelago; coll. Tring Mus.). 

 Certhidea olivacea drovmei Rothschild and Hartert, Novit. Zool., vi, Aug., 1899, 



150 (crit.). 



I No. 116103, coll. U. S. Nat. Mus. 



^ Description adapted from Rothschild and Hartert. 



^ Diagnosis adapted from Rothschild and Hartert. 



