GRACEFUL TROGON 



c. Head and chest distinctly golden green; ab- 

 domen yellow 



Trogonurus curucui tenellus, male 



cc. Head and chest purplish blue; abdomen 

 orange yellow. . Chrysotrogon caligatus, male 



aa. Upper parts and chest gray or brown. 



b. Upper parts and chest brown; abdomen light 

 yellow. . . . Trogonurus curucui tenellus, female 



bb. Upper parts and chest slate gray; abdomen 

 orange yellow. 



c. Under side of tail feathers white barred ba- 



sally with black 



Trogon strigilatus chionurus, female 



cc. Under side of tail feathers barred black and 

 white Chrysotrogon caligatus, female 



I. Trogonurus curucui tenellus (Cabanis) 

 Graceful Trogon 



Male. Length 224 mm. (8.80 in.); tail 134 

 mm. (5.30 in.). Upper parts including chest 

 bright metallic green with a golden tinge; tail 

 barred black and white on the under surface 

 when closed; wing coverts gray (fine, wavy lines 

 of black and white); remaining under parts 

 orange yellow. 



Female. Length 242 mm. (9.50 in.); tail 138 

 mm. (5.40 in.). Brown above and below to 

 cover the lower margin of the chest and shading 

 to cinnamon rufous on the tail; remainder of 

 under parts yellow. 



A male probably of this, the commonest of the 



yellow bellied species, was seen along the Chili- 



brillo River in February, 1924. It remained in 



the same vicinity for several hours, uttering 



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