Mr. 0. Salvin on the Ornithology of Guatemala. 191 
observed it frequenting pine trees in the district of Chilasco, 
Vera Paz, at about 6000 feet above the sea. 
6. Campylorhynchus rufinucha, Lafr.: Baird, Rev. Am. 
Birds, part i. p. 105. 
Prof. Baird (/. c.) has pointed out differences between this 
species and C. capistratus of Lesson, which specimens in our 
collection, in a measure, confirm. Specimens from the Pacific 
side of the watershed agree with C. capistratus , while a single 
specimen from the valley of the Motagua (Chuacus) differs from 
these as regards the coloration of the upper plumage; the tail 
also is rather longer, in both these respects agreeing with Prof. 
Baird^s description of C. rufinucha. The tarsi, however, are 
equal in all our specimens, and the quadrate spots on the outer 
rectrices (except the outermost) are absent. As the areas inha¬ 
bited by these very closely allied species are distinct, in Guate¬ 
mala at least, I prefer to leave them as Prof. Baird has placed 
them. 
7. Thryothorus albinucha (Cabot): T. petenicus , Salv. 
P. Z. S. 1863, p. 187; Baird, Rev. Am. Birds, part i. pp. 125, 
149. 
Prof. Baird has kindly compared our type specimen of T. pete¬ 
nicus with that of Troglodytes albinucha , Cabot; and the result of 
his observations will be found as above quoted. There seems little 
doubt that the species are identical. Our specimen was shot 
near the village of Sakluk, in the district of Peten. 
8. Dendrceca occidentalis (Towns.): D. niveiventris , Salv. 
P. Z. S. 1863, p. 187, pi. 24. fig. 2. D. occidentalis , Scl. Ibis, 
1865, p. 89. 
The error I fell into in redescribing this bird has been fully 
explained in the last mentioned paper by Mr. Sclater, who also 
had some sins to account for. The bird occurs in most of the 
elevated districts where pines abound. We obtained specimens 
in the Yolcan de Fuego, in the hills above the plain of Salama, 
and near the mines of Alotepeqne. 
9. Dendrceca olivacea (Giraud): Baird, Rev. Am. Birds, 
part i. p. 205. 
