448 PROCEEDINGS OF THE NATIONAL MUSEUM VOL, 97 
much as some of the races of this species are based on slight color 
differences, it would seem desirable to keep in mind a possible sexual 
dimorphism when making comparisons. 
DENDROPLEX PICUS PICUS (Gmelin): Picine Woodhewer 
Oriolus picus GMELIN, Systema naturae, vol. 1, pt. 1, 1788, p. 384 (based on “‘Le 
Talapiot’’ Daubenton, Planches enluminées . . . , pl. 605: Cayenne). 
SPECIMENS COLLECTED 
lad. #7, lad. 9,1im. 9, Venezuela, Soledad, Anzodtegui, June 11, 1931, and 
December 7, 1929. 
lim. o&, Venezuela, Laguna Icacal, near Ciudad Bolfvar, December 8, 1929. 
The two adult birds were in breeding condition. 
These specimens are slightly less tawny, more dusky, below than 
are examples from French and British Guiana. Zimmer (Amer. Mus. 
Nov., No. 753, 1934, pp. 16-17) noted a similar condition in his series, 
but concluded that without still larger series of Orinocoan birds, he 
could not “do more than suggest the strong possibility of the inter- 
gradation of picus and picirostris somewhere between Ciudad Bolivar 
and Caicara.”’ 
An additional specimen, taken in Estado Bolivar, December 30, 
1929, was preserved in alcohol. 
DENDROPLEX PICUS DUIDAE Zimmer: Duida Picine Woodhewer 
Dendroplex picus duidae Zimmer, Amer. Mus. Nov., No. 753, 19384, p. 15 (Caio 
Leén, Mount Duida, Venezuela, altitude 325 feet). 
SPECIMENS COLLECTED 
lad. o', 1 ad. 9, Brazil, Santa Isabel, Rio Negro, October 10-17, 1930. 
2 ad. o, 1 ad. 9, Venezuela, San Antonio, Upper Orinoco, March 2-5, 1931. 
1 ad. 2, Venezuela, Upper Orinoco, right bank opposite Corocoro Island, 
March 13, 1931. 
3 ad. o', 4 ad. 9, Venezuela, Puerto Ayacucho, Upper Orinoco, January 2, 
1930, and May 8-12, 1931. 
This race has the chin and throat purer white, less washed with 
buffy and less strongly streaked with dusky, than does the nominate 
form. It ranges from the Upper Orinoco and Mount Duida to the 
Upper Rio Negro. 
XIPHORHYNCHUS GUTTATUS GUTTATOIDES (Lafresnaye): Spotted Woodhewer 
Nasica guttatoides LAFRESNAYE, Rev. Mag. Zool., vol. 2, 1850, p. 387 (Loretto, 
Rio Marajion, Peru, and ‘‘Colombie’’= Bogot4; Bogoté is the type locality, 
according to Zimmer, Amer. Mus. Nov., No. 756, 1934, p. 1). 
SPECIMENS COLLECTED 
lad. 9, Brazil, Santa Isabel, Rio Negro, October 15, 1930. 
1 ad. ?, Brazil, Rio Maturacd, Amazonas, November 9, 1930. 
1 ad. o’, Brazil, Serra Imeri, Venezuelan border, December 2, 1930. 
2 ad. o', lim. &, lad. 9, Brazil, Sido Gabriel, Rio Negro, January 1-13, 1931. 
2 ad. co, Brazil, Cucuhy, Rio Negro, February 7, 1930. 
1 ad. o’, Venezuela, Brazo Casiquiare, Cafio Atamoni, February 6, 1931. 
