322 
Mr. O. Salving Visit to the 
works of Lafresnaye, so as to get rid of a number of names 
which are only perplexing to any one studying it. 
I spent much time in verifying the names under which I 
have been accustomed to mention many species of South and 
Central American birds. The few notes I here subjoin do 
not represent a tithe of the information, mostly confirmatory 
of previous views, I obtained. 
Buarremon gutturalis, Lafr. Rev. Zool. 1843, p. 98. 
On seeing the type of this species I at once recognized the 
bird we have been accustomed to call B. chrysopogon (Bp.). 
It is true that a specimen collected at Medellin by Mr. T. K. 
Salmon is somewhat blacker on the back than our series of 
Central American specimens; but the difference is very slight, 
and, in my opinion, not of specific importance. Mr. Sclater, 
in his monograph of the Tanagers (P. Z. S. 1856, p. 86), keeps 
the two species apart; so also does Gray (Hand-1, ii. p. 72) ; 
but in our f Nomenclator 9 (p. 24) only one species is men¬ 
tioned, under the name chrysopogon : gutturalis is a much 
older title; and the species should stand as 
Buarremon gutturalis. 
Arremon gutturalis , Lafr. Rev. Zool. 1843, p. 98. 
Buarremon gutturalis , Bp. Consp. p. 484. 
Zonotrichia ? aureigula , Bp. MS. 
Chrysopoga typica , Bp. Consp. p. 480. 
Buarremon chrysopogon , Scl. P. Z. S. 1856, p. 86. 
Synallaxis brachyura, Lafr. Rev. Zool. 1843, p. 290. 
There are three specimens thus named in the Lafresnaye 
collection, all of which are immature birds. So far as I could 
see, they belong to the species subsequently called S. pudica 
by Sclater (P. Z. S. 1859, p. 191, pi. 10). As the distinctive 
markings are not matured, and the rectrices imperfectly grown 
(hence Lafresnaye's name), it would be unsafe to use the 
name hr achy ur a in preference to Sclater’s S. pudica , at least 
for the present. 
Margarornis squamiger, D'Orb. et Lafr. Syn. Av. ii. p. 14. 
The Bogota bird usually thus called differs from one of the 
