66 



SIXGIXO BIHDS — OSCIXES. 



longer than the inner, reaching beyond the base of the middle claw. AVings a little 

 longer than the tail ; the exposed portion of the first primary about half that of the fourth 



C. ]\'Uxicanus. 



and fifth. Tail feathers rerv liroad and pcrlt'otly plane, tail nearly even, the two lateral 

 graduated ; the outer about eleven twelfths of the middle. 



Catherpes Mexicanus, Swaixson. 



THE WHITE-THROATED WREN. 



Thri/ofhonis Mexkamm, Sw.tixsos, Zool. Illust. i.l ser. I. 1S29; pi. xi. (Real del Monte, 

 Mexico.) — Tro!jlo(h/le-<: Mcricanus, Gray, Genera, I. 1S47, 159. — Heermanx, J. A. N. 

 Sc. 2d ser. 11. IS.3.3, 26.3. — Cassis, Illust. I. vi. 1854, 173 ; pi. xxx. 



Certhia alhifrom, GiRAfD, IC Sp. Texan Birds, 1844 ; pi. viii. 



Callurpes McrkaiiKS, Baikd, P. R. Rep. IX. Birds, 356. — Kexxeki.t, X. iv. 26. 



Sr. Char. Bill considerably longer than the head; claws large. Head and neck 

 above dark ashv-brown, passing gradually into light rusty-brown on the rmnp ; the sides 



of the body, b<dly. and under tail coverts similar, all these regions marked with small 

 rounded white and dusky s])ots, the latter in the form of waved bars on the feathers of the 

 back ; an obscure wliite line over the eye. Chin, tln-oat, and u]iper jiart of the breast 



