Genera of Huunniiicr Birds. 191 



Thalurania cyanifrons, Bon., Consp. Gen. Av., 1850, p. 77. 



Chlorestes cyanifrons, Reich., Troch. Enum., 1855, p. 4. 



Hemithylaca cyanifrons, Heine, Journ. fur Ornith., 1863, 

 p. 191. 



Ariana cyanifrons, AIuls., Hist. Nat. Ois. Mou., 1S74, t. i., 

 P- 332- 



Blue-capped Sancerottia, Gould, Mon. Troch., vol. v., p. 223. 

 la Sauccrotte a fete bleiie. 

 Habitat. — Columbia. 



Male. — Head deep shining blue. Upperside bronzy-green, 

 passing to dull bronze on rump. Uppertail-coverts bluish- 

 bronze. Tail bluish-black. Underside brilliant metallic 

 grass-green, golden on centre of abdomen in some specimens. 

 Sides of flanks and thighs white. Undertail-coverts, purplish- 

 bronze margined with white. Wings purple. Maxilla black. 

 Mandible flesh colour, with black tip. 



Total length, 3fin. Wing, 2|. Tail, i.^. Culmen, I-. 



Female. — Upperside like that of male, but less brilliant. 

 Underside metallic grass-green with the centre of abdomen 

 and sides of flanks gray. Undertail-coverts pale olive 

 margined with gray. 



Total length, 3iin. Wing, 2. Tail, if. Culmen, |-. 



This species is very common in Columbia, where it was 

 discovered by M. RiefTer. 



I have one male specimen with white feathers on head, 

 neck and throat, as if passing to albinism. 



274. Sauckrottia nunezi, Boucard, Hum. Bird, 1892, p. 81. 

 Nunez's Sancerottia. 

 la Sauccrotte de Nuiiez. 

 Habitat. — Columbia. 



Male. — Upperside black with purplish reflections. Upper- 

 tail-coverts purplish, each feather margined with grayish-green. 

 Tail dark steel-blue. Wings bluish-purple. Throat shining 

 dark purple, each feather with a white band above the purple, 

 giving a scaly appearance to that part. Abdomen and flanks 

 purplish, margined with gray. A patch on each side of flanks, 

 vent, and tarsal tuft pure white. Undertail-coverts dark 



