cherrie;: ornithology of thk Orinoco region, 295 



Florisuga mellivora mellivora (Linnaeus). 



Trochilus mellworiis L., Syst. Nat. ed. 10. I. 1^58. p. 121. 

 Florisuga mellivora Berlepsch & Hartert, p. 82. 



Not observed at Bolivar and rare at Caicara where an adult male 

 and an adult female were taken May 8th. Abundant on the upper 

 river. 



Eye seal ; bill black ; feet dusky blackish. 



Agyrtria albiventris (Lesson). 



Ornismya albiventris Less., Hist. Nat. Ois.-Mouches, 1829. pp. XXXIV, 

 209. PI. 76. 



Agyrtria albiventris Berlepsch & Hartert, p. 83. 



This is the most abundant species of Hummingbird found along 

 the Orinoco up as far as the falls in the river. It is a bird of the 

 open savanna regions. 



Eye dark seal brown ; bill dusky reddish with blackish tip ; feet 

 dusky. 



I have found nests every month from May to November, and in 

 localities as varied as the months — from a point out toward the ex- 

 treme tip of a limb of a tree 20 metres up, to the forks of a slender 

 shrub not more than 50 cm. above the ground. A nest before 

 me is a neat, trim, little cup-shaped affair, built of the soft silky bits 

 of native cotton adorned, on the outside, with scattered pieces of 

 greenish gray lichens. It measures 4 cm. diameter by 2.8 cm. in 

 depth outside, and 2.7 cm. diameter by about 1.8 cm. in depth inside. 

 It was located about 1.6 m. from the ground near the tip of a large 

 horizontal limb of a mango tree, at a point where a tiny twig 

 branches from the main stem, the angles between the two forming 

 the foundation for the nest. The egg (one of the set broken) is 

 elliptical-oval in form and measures 13.2 x 8.8 mm. 



Agyrtria fimbriata (Gmelin). 



Trochilus fimbriattis Gmelin, Syst. Nat. I; 1788: p. 493 (Cayenne). 

 Agyrtria fimbriata Stone, Proc. Ac. Nat. Sci. Phil. 1913: p. 201 (Boca 



Uracoa, and Buelta Trieste, River Manimo; Cano Corosal). 



Reported from the delta country by Stone. 



