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 



Pyrgisoma occipitale^ sp. n. 



Chameeospiza torquata, Scl. & Salv. Ibis, I860, p. 274 (nee 

 DuBus). 



Pyrgisoma leucote, Salv. Ibis. 1866, p. 205 (nee Cab.) ; Scl. 

 & Salv. P. Z. S. 1868, p. 326, et Ex. Orn. p. 128, pi. Ixiv. f. 2 

 (nee Cab.). 



Affine P. leucoti, sed pileo cinereo nee nigro, superciliis di- 

 stinctis flavis et macula pectorali minuta distinguendnm. 



Hab. Guatemala. 



Mus. nostr. 



These differences seem sufficient to distinguish this bird. 

 The figure in ' Exotic Ornithology,' which was taken from a 

 Guatemalan bird, displays them. The Costa-Rican P. leucote 

 has the head almost black, and I can detect no median streak 

 whatever. The superciliary mark, so clear in P. occ'ipitale, 

 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-Rican 

 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 intermixtis." 



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 Fuego 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- 



