BIRDS FROM BRAZIL AND SOUTHERN VENEZUELA—FRIEDMANN 553 
south by boliviana, a situation which would certainly be unlikely and 
which would necessitate a reinvestigation of the validity of lateralis. 
CALOSPIZA GYROLA PARVA (Zimmer): Zimmmer’s Green Tanager 
Tangara gyroloides parva Zimmer, Amer. Mus. Nov., No. 1246, 1943, p. 5 
(Mount Curycuryari, Rio Negro, Brazil). 
SPECIMENS COLLECTED 
2 ad. o', Sio Gabriel, Rio Negro, Amazonas, Brazil, January 1—3, 1931. 
1 ad. o&, Cucuhy, Rio Negro, Amazonas, Brazil, February 7, 1930. 
According to the measurements given by Hellmayr (Catalogue of 
the birds of the Americas, pt. 9, 1936, p. 143, footnote) for catharinae 
these specimens from the extreme northeastern part of the range of 
the subspecies are very small. They have wing lengths of 69, 69.5, 
and 70 mm., respectively, while Hellmayr’s series of males (from 
Peru) had wings varying from 70-77 mm. in length. A male from 
near Macas, eastern Ecuador, has a wing length of 76 mm., two others 
from along the eastern Ecuadorian-Peruvian border are smaller, more 
like the Rio Negro birds, with wing lengths of 72—72.5 mm.; two 
eastern Peruvian specimens measure 74 and 76 mm., respectively, 
while 4 males from Colombia have wings of 71, 76, 76.7, and 80 mm. 
respectively. The bills are smaller and weaker in the Rio Negro 
birds than in east Ecuadorian specimens, a difference that is more 
apparent to the eye than to the calipers, but which may be expressed 
mensurally as follows: Width of bill at gape 8.5-8.7 in eastern Ecua- 
dorian males, 8.0-8.2 in Peruvian birds; 7.0—7.8 in Colombian ones, 
and 7.0-7.5 in Rio Negro males. It may be that more extensive 
series would indicate a fairly constant average difference in size 
between the two groups. The present Rio Negro birds may be 
characterized as agreeing with typical catharinae from eastern Peru 
and Ecuador in coloration, and with albertinae of Lower Amazonia and 
Matto Grosso in size. Strangely enough, the Colombian, Ecuadorian, 
and Peruvian specimens of catharinae have the top and sides of the head 
averaging slightly paler than on the Rio Negro ones, more like alber- 
tinae of Lower Amazonia. In other words, they agree with the 
characters given by Zimmer in his establishment of parva; the race is 
recognizable although by no means strikingly marked. 
CALOSPiZA CAYANA CAYANA (Linnaeus): Rufous-crowned Tanager 
Tanagra cayana LINNAEUS, Systema naturae, ed. 12, vol. 1, 1766, p. 315 (based on 
“Le Tangara verd, de Cayenne” Brisson, Ornithologie, vol. 3, 1760, p. 21, 
pl. 4, fig. 3: Cayenne). 
SPECIMENS COLLECTED 
lim. 9, San Antonio, Upper Orinoco, Venezuela, March 5, 1931. 
lad. @, 1ad. 9, Cerro Yapacana, Upper Orinoco, Venezuela, March 22, 1931. 
3 ad. o, 2 ad. 9, 2im. 9, Puerto Ayacucho, Rio Orinoco, Venezuela, May 
13-19, 1931, and January 3, 1930. 
