132 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I50 



the La Jagua marshes, in eastern Panama province on June 14, 1936 

 (Griswold, Auk, 1936, p. 457). 



The specimen, in the collections of the Museum of Comparative 

 Zoology, is an adult bird in slightly worn plumage. The species is 

 found in northwestern Colombia and may be expected to wander 

 casually into Darien. 



DENDROCYGNA AUTUMNALIS AUTUMNALIS (Linnaeus): Black-bellied 



Tree Duck: Giiichlchi 



Figure 22 



Anas autuntnalis Linnaeus, Syst. Nat., ed. 10, vol. 1, 1758, p. 127. (West Indies.) 



A prominent white patch in the wing ; sides and abdomen black. 



Description. — Length 430 to 460 mm. Crown, lower neck, upper 

 breast, and back rufescent brown; sides of head, and upper neck 

 light gray ; throat white ; lower back, abdomen, flight feathers, and tail 

 black; a band of brownish gray across breast; lesser wing coverts 

 brownish buflf; middle coverts gray; greater coverts, and bases of 

 central primaries prominently white ; under tail coverts streaked with 

 white. 



Measurements. — Males (5 from Panama and northern Colombia), 

 wing 217-235 (227), tail 60.4-76.0 (67.1), culmen from base 47.5- 

 57.5 (50.7), tarsus 55.1-57.2 (56.2) mm. 



Females (5 from Panama and northern Colombia), wing 222-237 

 (226), tail 59.0-70.5 (64.0), culmen from base 46.6-50.0 (48.5), 

 tarsus 52.0-56.0 (54.9) mm. 



Resident. Tolerably common ; recorded on the Pacific slope from 

 western Chiriqui (Divala), Veraguas (Sona), Herrera (lower Rio 

 Santa Maria, Cienaga Macana), eastern Panama (Tocumen, Pacora, 

 Rio La Jagua) ; Darien (specimen in U. S. National Museum with- 

 out definite locality) ; and, on the Caribbean side, in the eastern San 

 Bias (Perme, Obaldia). 



Lawrence (Ann. Lye. Nat. Hist., vol. 8, 1863, p. 13) recorded 

 one received from McLeannan; Salvin had a specimen from the 

 same source (Salvador!, Cat. Birds Brit. Mus., vol. 27, 1895, p. 161) 

 and saw two tame birds kept by McLeannan at Lion Hill (Sclater 

 and Salvin, Proc. Zool. Soc. London, 1876, p. 374). Festa, also, ob- 

 tained a pair alive in Panama City (Salvadori and Festa, Boll. Mus. 

 Zool. Anat. Comp. Univ. Torino, vol. 14, no. 339, 1899, p. 13). 



These attractive ducks are found along the lower courses of the 

 larger rivers, in the brackish waters back of the mangrove swamps, 

 and about fresh-water lagoons. 



