7G8 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



CERTHIDEA CINERASCENS Ridgway. 

 GRAY CERTHIDEA. 



Similar to C, fnsca^ but much graj^er above and whiter beneath, and 

 bill smaller (length from nostril to tip of maxilla not exceeding 8,5). 



Adult male. — Above plain dull brownish gray, beneath wholly dull 

 grayish white, faintly tinged with buft'y, especially along sides; bill 

 black, basal half of mandible horn color; legs and feet black; length 

 (skin), 97.S; wing, 50.8; tail, 35.6; exposed culmen, 9.4; bill from 

 rictus, 11.4; tarsus, 18.5; middle toe, 10.9.' 



Galapagos Archipelago (Hood Island and (xnrdner Island, near Hood 

 Island). 



CertJildea cinerascens Ridgway, Proc. U. S. Nat. Muh., xii, no. 767, Feb. 5, 1890, 



105, 119, 127 (Hood I., Galapagof- Arcliipelago; roll. U. 8. Nat. I\Ius.); xix, 



1897, 503 (monogr.). 

 Certhidea cincraticcuK cincrdHcciis Rothschild and Hartekt, Novit. Zool., vi, Aug., 



1899, 151 (Hood I. and Gardner I., near Hood). 

 Certhidia cinerascens Bavr, Am. Nat., xxxi, 1897, 783 (Gardner I., near Hood). 

 Ccrthidm olirascens {laspus j)ennn) Ridgway, Proc. U. S. Nat. Mus., xii, 1890, 



124 (Hood I.). 



CERTHIDEA BIFASCIATA Ridgway. 

 BARRINGTON ISLAND CERTHIDEA. 



Similar to C. emera.scens^ but still whiter (entirely almost pure white) 

 beneath, and wing with two broad whitish bands across tips of greater 

 and middle coverts. 



Adult. — Al)o\'e brownish gra}^ becoming very much paler on the 

 rump; wings and tail dusky, the feathers ])roadIy edged with grayish 

 brown; middle wing-coverts broadly tipped with pale dull buffy, and 

 greater coverts with dull white, producing two conspicuous l)ands 

 across the wing: lores, orbits, cheeks, and entire under parts uni- 

 form dull white; maxilla dark brown, with whitish tomia; mandible 

 whitish; legs and feet brownish black; length (skin), 86.4; wing, 50.8; 

 tail, 35.6; exposed culmen, 10.2; tarsus, 19.8; middle toe, 12.2.*^ 



Three specimens from Barrington Island agree in the above char- 

 acters. 



Galapagos Archipelago (Barrington Island). 



Certhidea hifnsckda Ridgway, Proc. U. 8. Nat. Mus., xvii, no. 1007, Nov. 15, 1894, 

 359 (Barrington I., Galapagos Archipelago; coll. Dr. G. Baur^); xix, 1897, 

 504 (monogr.). 



Certhidea (•inerasceni^ bifamata Rothschild and Hakteht, Novit. Zool., vi, Aug., 

 1899, 151 (Barrington 1.). 



iType, no. 116069, coll. U. 8. Nat. Mus., Hood Island, Galapagos, Apr. 7, 1888. 

 ^Type, no. 593, coll. Dr. (i. Baur (now in coll. Tring Mus.), Barrington Island, 

 Galapagos, July 9, 1891. 



