168 DENDROCOLAPTID A. 
the State of Panama, the bird most probably occurs in suitable localities. In the State 
of Panama it has been found in several places both along the line of railway and in 
districts lying nearer the Costa Rica frontier *. 
The range of S. mexicanus in South America is generally admitted to be extensive 
and to reach to the Amazons Valley throughout its length, and even to extend to 
Bahia, though the latter point requires confirmation. 
Central American examples appear to have the chestnut colour of the breast spread 
further over the abdomen than is the case with those from South America. Within 
our limits, birds from the State of Panama are a shade darker than those from Guate- 
mala, but on the whole the variation is slight for a bird having so wide a range. 
In habits Sclerurus mexicanus resembles some Troglodytide. It was not seen to 
climb like other Dendrocolaptide, but to hop about the brushwood and to scratch 
amongst leaves on the ground. The cry is shrill, and may be heard at some distance °. 
8. Sclerurus guatemalensis +. (Tab. XLIV. fig. 1.) 
Tinactor guatemalensis, Hart]. Rev. Zool. 1844, p. 370°. 
Sclerurus guatemalensis, Scl. & Salv. Ibis, 1859, p. 118°; P. Z.S. 1864, p. 354°; Salv. Ibis, 
1861, p. 852%; Ridgw. Pr. U.S. Nat. Mus. xii. p. 30°; Scl. Cat. Birds Brit. Mus. xv. 
p. 117°. 
Sclerurus caudacutus, Lawr. Ann. Lyc. N. Y. vii. p. 320 (nec Vieillot) ’. 
Supra brunneus fere unicolor, uropygio vix rufescentiore, cauda nigricanti-fusca: subtus paullo rufescentior, 
gula albida, plumis singulis fusco marginatis, plumis, cervicis laterum et pectoris medialiter rufis, scapis 
pallidioribus : rostro et pedibus nigricanti-corylinis, mandibule basi albicante. Long. tota 6°5, ale 3°5, 
caude rectr. med. 2°35, rectr. lat. 1:9, rostri a rictu 1:05, tarsi 0-9. (Descr. exempl ex Choctum, Gua- 
temala. Mus. nostr.) 
Mas et femina similes. 
Hab. Guatemata (Hartlaub), Choctum (0. S. & F. D. G.4); Costa Rica, Jimenez and 
San Carlos (A. Alfaro®), Sibuhuc in Talamanca (J. C. Zeledon®); Panama, Lion 
Hill (4 Zeannan *7).—Ecuapor 2%, 
We have a specimen from Guatemala which agrees fairly with Dr. Hartlaub’s 
* There seems some confusion respecting M‘Leannan’s specimens of Sclerurus, obtained on the Isthmus of 
Panama. These have been recently re-examined by Mr. Ridgway, and we follow his determination of them. 
+ We are uncertain as to the proper name for the bird from the Isthmus of Darien called by Cassin 
Sclerurus brunneus. 
Sclerurus brunneus, Scl.; Cass. Pr. Ac. Phil. 1860, p. 193; Riigw. Pr. U. 8. Nat. Mus. xii. p. 29. 
Hab. Rio Ingador, Colombia (W. S. Wood, Jun.). 
Mr. Ridgway considered the specimen thus named to be young, and it was the only example which he 
attributed to S. brunneus when writing his monograph of the genus. It is described as having “the throat 
white, with brown or dusky margins to the feathers,” a character better suiting S. guatemalensis than S. brun- 
neus, the throat-feathers of which are very indistinctly edged with dusky. 
