580 DR. O. FINSCH ON THE BIRDS OF TRINIDAD. [June 23, 
75. THRAUPIS CANA (Sw.). 
Tanagra cana, Scl. Mon. p. 232, Cat. Am. B. p. 75; Taylor, l. e. 
p. 82. 
Tanagra glauca, Léot. (nec Sparrm.), p. 293. 
Two specimens, not differing from one from Brazil in the Bremen 
collection. 
Long. al. caud. rostr. _- tars. 
3" 5 9" 3" 6" g!" (Trinidad. ) 
S10 24 6 9 (Brazil.) 
3 4 23 6 93  (glaucocolpa, Venezuela.) 
3 10 2 8 5s 10 = (eyanoptera, Brazil.) 
In the Catalogue of Dr. Sclater’s collection (p. 75) there is noticed 
from Trinidad Tanagra glaucocolpa, Cab. (Mus. Hein. p. 28), which 
is not mentioned by Dr. Léotaud. We possess a specimen of Thraupis 
glaucocolpa from Venezuela (Baranquilla); Cabanis notices this 
species from Caraccas. Its nearest ally is Th. cyanoptera, Viceill., 
but it is much smaller; breast and sides of the belly bright ultra- 
marine-blue, the coverts of the primaries (in Cabanis’s description 
erroneously described as “ alula spuria’’) dark greenish blue, forming 
a well-defined mark on the wing; under tail-coverts dirty white. 
Th. celestis, Spix (Av. Bras. ii. t. 55. f. 2), is by no means the 
same as Th. episcopus, L., as Cabanis suggests, but is a well-marked 
species, easily distinguished by the broad white apices of the tec- 
trices of the secondaries, forming a white band across the wing. 
Dr. Sclater has already corrected this in his valuable Monograph. 
Th. serioptera, Sw. (An. in Menag. p. 313; Cab. M. H. p. 28), 
from Demerara, is undoubtedly the same as Th. episcopus, L., as 
the accurate description of Brisson (Zpiscopus avis) shows. We 
possess this species also from Demerara. 
76. THRAUPIS PALMARUM (Neuwied). 
Thraupis olivascens, Licht. 
Thraupis melanoptera, Hartl. 
Thraupis palmarum et melanoptera, Scl. Mon. pp. 234, 235. 
Thraupis melanoptera, Taylor, l. c. p. 82. 
Thraupis olivascens, Léot. p. 295. 
Three specimens. 
Dr. Sclater and Von Pelzeln are of opinion that 7’. melanoptera may 
be only a local variety of 7. palmarum, having inspected intermediate 
forms from Bolivia and Trinidad (Sclater). Having before me ten 
specimens from Brazil, Trinidad, Guiana, and Peru, I am not able 
to find out any constant difference, and must declare them all to be 
identical, although there exist some differences. The Brazilian bird 
has the remiges broadly edged externally with dull olive; in the 
Peruvian specimen (type of 7’. melanoptera) only a slight sign of 
these olive edgings is visible. These two birds seem to belong to 
two well-distinguished species. But there are other specimens from 
Demerara and Trinidad so intermediate in this respect that one cannot 
