446 
Mr. O. Salvin on Birds from 
belonged to one and the same species. The accession of a 
number of specimens from both countries has convinced me 
that the Guatemalan bird is capable of being easily distin¬ 
guished from the Costa-Rican one. I therefore characterize 
the first of the species referred to in this paper as 
L Pyrgisoma occipitale_, sp. n. 
Chamceospiza torquata, Scl. & Salv. Ibis^ 1860^ p. 274 (nec 
Du Bus). 
Pyrgisoma leucote, Salv. Ibis. 1866^ p. 205 (nec Cab.); Scl. 
& Salv. P. Z. S. 1868, p. 326, et Ex. Orn. p. 128, pi. ixiv. f. 2 
(nec Cab.). 
Affine P. leucoti, sed pileo cinereo nec nigro, superciliis di- 
stinctis flavis et macula pectoral! minuta distinguendum. 
Hab. Guatemala. 
Mus, nostr. 
These difiPerences seem sufficient to distinguish this bird. 
The figure in ^ Exotic Ornithology,^ which was taken from a 
Guatemalan bird, displays them. The Costa-Bican P. leucote 
has the head almost black, and I can detect no median streak 
whatever. The superciliary mark, so clear in P. occipitale, 
is scarcely perceptibly shown towards the nape in P. leucote, 
the feathers behind and above the eye being black like the 
crown. The pectoral spot in the Guatemalan bird is small, and 
quite isolated from the black throat, whereas in the Costa-Bican 
species the large black spot of the chest blends with the black 
throat, a few white feathers alone being usually, but not 
always, seen between them—a character described by Cabanis 
as ^^jugulo pectoreque supremo nigro, albo intermiootisP 
That the two birds are distinct is not surprising, as both 
are inhabitants of temperate climates, and a wide expanse of 
hot country separates their respective homes. 
I have nothing to add to the account given of P. occipitale 
in Exotic Ornithology,^ except to say that I obtained a good 
many specimens of the species from its haunts on the slopes 
of the Volcan de Euego in 1873, and that, so far as I can see, 
the sexes are quite alike in colour. 
The second bird I have to describe is a species of Odonto- 
