On Birds from Central and South America, 445 
In the ^Hand-list of Birds'’ (i. p. 382), G, R. Gray quotes 
under V, chlorogaster a synonym V. dubusi, Verr. I have 
been unable to find any published description of the bird 
under this name. I find, however, with Mr. Sharpens as¬ 
sistance, that, besides the type of V. chlorogaster, there is 
a second specimen in the British Museum, which was ac¬ 
quired (apparently from Verreaux, through Cuming) in 1858, 
and which is called in the register V. dubusi. With it the 
Museum obtained, amongst other birds, Monarcha castaneu 
described by Verreaux in the ^ Revue de Zoologie ^ 
in 1858 (p. 304). As no description of V. dubusi appears in 
the same paper, it seems more than probable that it never 
was so described at all. This name, in fact, is doubtless 
one of the many which Gray copied from the bottom of a 
stand, or from a label, and incorporated into his ^ Hand-list ^ 
to perplex us all in our searches for their origin Of the same 
nature, perhaps, is a synonym of V. icterophrys, quoted in 
the ^ Hand-lista few fines lower down, and fathered upon 
Mr. Sclater and myself, except that in this case an evident 
lapsus calami was most probably perpetrated by Gray’s own 
pen! 
Lastly, it remains to give the altered synonymy of V. 
leucotis, which runs thus :— 
ViREOLANius LEUCOTIS. (Plate XI.) 
Malaconotus leucotis, Sw. An. in Menag. p. 341 (1838). 
Vireolanius icterophrys. Bp. Compt. Rend, xxxviii. p. 380, 
et Not. Orn. p. 60 (1854); Baird, Rev. Am. B. p. 399; Scl. 
& Salv. Ex. Orn. p. 16; Nomencl. p. 16. 
Mus. Acad. Cantabr. et S. & G. 
XXXV.— Descriptions of two new Species of Birds from 
Central America, and one from South America, By Osbert 
Salvin, M.A., F.R.S., &c. 
When Mr. Sclater and I, in 1868, last revised the genus 
Pyrgisoma (Ex. Orn. p. 128), we considered that Guatemalan 
and Costa-Rican specimens, there called P, leucote (Cab.), 
