CEETHIOLA. 251 



Certhiola flaveola, d'Orb. & Lafr. Syn. Av. ii. p. 24 (nee Linn.) ". 



Certhiola luteola, Lawr, Ann. Lye. N. Y. vii. p. 291 "; viii.p. 175 " ; Salv. P. Z. S. 1870, p. 185 " 



(nee Cabanis). 

 Certhiola peruviana, Cab. J. f , Orn. 1865, p. 413 '' ; Baird, N. Am. B. i. p. 428 ". 



Supra saturate fusca, capite nigro, superciliis elongatis et speculo alari albis, alia et cauda fuseo-nigris, hujus rec- 

 tricibus externis albido terminatis, uropygio flavicante ; subtus gula cinerea, abdomine toto flavo ; rostro 

 nigro, pedibns plumbeis. Long, tota 3-8, alae 2-0, caudae 1-2, rostri a rictu 0-6, tarsi 0-6. (Descr. maris 

 ex Choctum, Guatemala. Mus. nostr.) 



Av. Tiornot. supra fusca, capite concolori, stria superciliari iadistincta; subtus flavicans, gula albescentiore. 

 (Descr. exempl. ex Turrialba, Costa Eica. Mus. nostr.) 



Rab. Mexico (Salle), Jalapa (de Oca^), Playa Vicente {Boucard^); Guatemala, 

 Choctum {0. 8. & F. D. GA); Costa Eica, Turrialba and Atenas {Carmiol^); 

 Panama, David {Hicks i^), Bugaba, Cordillera del Chucu {Arce i*) ; line of Railway 

 (M'Leannan^ ^^). — South Ameeica, Colombia^ to Bolivia'^ i^. 



First described from Southern Mexico by Mr. Sclater in 1856, Certhiola mexicana 

 has gradually been traced through Guatemala and the rest of Central America, and 

 along the slopes of the Andes as far south as Bolivia. It is true that various attempts 

 have been made to divide the birds found in this area into several races ; but, with a 

 large series before us, we feel convinced that no separation can be maintained. Its 

 range on the continent of South America is somewhat peculiar, in that it extends in an 

 almost straight line, not diverging at all to the eastwards, for in Venezuela a distinct 

 species (C. luteola) quite takes its place. 



In Guatemala C. mexicana has none of the habits which render the Antillean species 

 so familiar ; for we never observed it frequenting the houses as the allied species are 

 wont to do. In Guatemala, indeed, it is by no means a widely distributed bird, being 

 restricted in its range, so far as we know, to the tropical forests of northern Vera Paz, 

 at an elevation of about 1200 feet above the sea. Here, however, it is common enough, 

 judging by the number of specimens obtained for us by our native collectors. 



We never obtained its nest or eggs ; but Salmon, who met with both at Eemedios 

 and Medellin in the Colombian State of Antioquia, describes the former as made of 

 fine dry grasses, and oval in shape, with a side entrance ; it is usually placed at the 

 extremity of a bough, but not suspended from it. The eggs are dirty white, thickly 

 spotted with red-brown, especially in a zone under the larger end; they measure 

 •65 by -5 6. 



2. Certhiola caboti. (Tab. XV. a. fig. 4.) 



Certhiola caboti, Baird, Am. Nat. vii. p. 612'; N. Am. B. i. p. 427 ^j Salv. Ibis, 1874, p. 327 \ 

 Supra nigricante-fusca, capite dorso concolori, uropygio et abdomine pallide flavis, superciliis elongatis, gula et 

 speeiilo alari albis, caudse rectricibus externis vix albo terminatis, rostro nigro, pedibus fuseis. Long, tota 

 4-5, ate 2-25, caudffi 1-6, rostri a riotu 0-6, tarsi 0-6. (Descr. exempl. ex Cozumel, Mus. Best. Soc. N. H.) 



Hab. Mexico, island of Cozumel, off the coast of Yucatan {Cahot ^ ^ ^). 



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