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name of 7” rufus as inappropriate, and 7”. lepturus, proposed by Swanson, winebiia
c : 3a = i
e of Lichtenstein’s quoted by Dr. Cabanis, the other

in different districts of its range.

‘« Setting aside the
: ¢ 7 atricollis, as well as the MS. titl
or supposed races occurring
jarated by Herr von Pelzeln as 7. chrysochlorus, and the Central-
atricollis being applicable to the race found in

pure synonym 0
names given to this bird all refer to races
Thus the South-Brazilian bird has been se}
American as 7. ¢enellus by Dr. Cabanis, Vieillot’s name, ie
Guiana and the valley of the Amazons.

eer oceasions, both by myself and with

bird from all parts of its range with a view
Iwavs come to the conclusion that such a rank could not be granted them without

ssible, to assign to every specimen its right name. To show

«Having on Mr. Sclater, closely examined numerous
avinge

i ; i to test the right of these various races to
specimens of this g

rank as species, I have a

rendering it exceedingly difficult, if not impo
his point, I may add that Dr. Cabanis, Mr. Gould, and Mr. Lawrence,

bow varied is the state of opinion on t
a . e 7 ae B i 2 G ° 5 me Rp.
uphold the distinctness of 7” enellus, the two former rejecting T. chrysochlorus as distinct from 7°. atricollis.

Dr. Finsch agrees with Herr von Pelzeln in maintaining the specific rank of 7. chrysochlorus, suggesting

: a . : ? z i
(as it appears to me rightly) that the birds described in the ‘Museum Heineanum’ really were
T. chrysochlorus and not T. atricollis. I think myself that the differences observable are so slight that
rather as tendencies to vary in a particular direction in a particular locality than
At the same time I must say that, if their separation be maintained,
dered distinct from the Guiana race than

they may be regarded
as fixed, definite, specific characters.
the South-Brazilian has equal, if not stronger, claims to be consi
The Guiana bird is in fact almost precisely intermediate between the races found

The white bands of the tail are widest and fewest in 7. tenedlus, narrowest
The central tail-feathers bave a bluish shade in 7% ¢enedlus, and are

the Central-American has.
in Brazil and Central America.
and most numerous in 7. chrysochlorus.
most bronzy in 7. chrysochlorus. The wing-coverts are coarsely mottled in the former, finely in the latter.

In all these points 7’ atricodhs is intermediate.”

Leaving the northern form, T. tenellus, to be noticed in a separate article. I will now trace the range of
T. atricollis, including with it 7. chrysochlorus.

Buffon alludes to its occurrence in Cayenne. It also occurs in Demerara, where Schomburgk met with
it; but westwards of this district I have not yet come across any recent allusion to its occurrence in
Venezuela or Trinidad, though Levaillant mentions its presence in the latter island. Throughout the valley
of the Amazons it is found apparently in abundance. Natterer obtained nine examples during his voyage at
Nas Lages, Borba, Marabitanas, Cocuy, and Barra do Rio Negro; while on the Upper Amazons, or
Solimoens, Spix met with it, and subsequently Mr. E. Bartlett within the frontiers of Peru at Chamicurros.
In Southern Brazil Prince Maximilian found it at Bahia, whence, and also from Rio de Janeiro, numerous
specimens are constantly sent to Europe. In the province of Sao Paulo Mr. J. F. Hamilton found it pretty
generally distributed throughout the forest, but not abundant in any one locality. He adds that it 1s)08
rather solitary habits, and that he never saw two together. In the same district, at Ypanema, Natterer
secured fifteen examples, and upon these he bestowed the name chrysochlorus, afterwards described by Herr
von Pelzeln. Trogon atricollis is also found still further south, in the province of Rio Grande do Sul, whence
Mr. Rodgers has sent us specimens.

The figures in the Plate are of the natural size.