36 C(EREBrD.E. 



Arbelorliina nitida, Cah. Mus. Hein. i. p. 96 ; Reichenh. Handb. 

 p. 235. 



Bright bluish purple-blue ; lores, throat-patch extending over 

 breast, wings, tail, and under wing-coverts velvety black ; bill black; 

 feet pale flesh-colour: whole length 3-5 inches, wing 2, tail 1. 

 Female. Dark green ; throat and middle of belly pale ochraceous ; 

 sides of body striated with whitish ; crissum yellowish. 



Hah. Colombia and Upper Amazonia. 



This is a well-marked species, easily known by its small size, short 

 bill, the extension of the black of the throat over the chest, and the 

 brighter tint of the blue, especially above. 



a. (S ad. sk. Bogota. Sclater Coll. 



b. (f ad. sk. Amazons (6r'o??Zf7). Salvin-Godman Coll. 



c. (S ad. sk. Pebas, Eastern Peru {nat(x- Salvin-Godman Coll. 



7oell) . 



d. 5 !id. sk. Xeberos, Eastern Peru Sclater Coll. 



{Bartlett). 



e. (S jr. sk. Ega, Amazons (Bates). Purchased. 

 /. c? ad. sk. Ucayali, Peru. Purchased. 

 ff. cJ ad. sk. S. America. Sclater Coll. 



11. CEETHIOLA. 



Type. 

 Certhiola, Sund. (Efrers. Vet.-AL Handl. 1835, p. 99 . . C. flaveola. 



The group of little Flower-peckers comprised in this genus com- 

 prehends about eighteen or nineteen local forms all moulded and 

 coloured exactly on the same type. Some of them, especially the 

 continental representatives, present but slight points of difference 

 and run one into the other. But as Mr. Kidgway has lately pub- 

 lished a synopsis of this genus, drawn up upon the large series in 

 the United States National Museum, I have thought it best to foUow 

 his system as nearly as possible, and to consider all the fairly sepa- 

 rable forms as specific. 



The nests of Certhiola are constructed of moss and silk-cotton, 

 and placed in low trees and shrubs ; they are domed over. The 

 eggs are two, of a dull white spotted with reddish brown. (Cf. 

 Gosse, B. Jam. p. 85, and Euler, J. f. 0. 1867, p. 406.) 



Key to the Species. 



A. Above olivaceous or blackish ; below yellow. 

 a. Alar speculum distinct. 

 a'. Throat greyish white. 



rt^. Yellow below confined to breast .... 1. haliamensis, p. 37. 

 b-. Yellow extending over abdomen ; 



j back lighter 2. cahoti, p. 38. 



I back darker 3. tricolor, p. 38. 



h' . Throat ashy grey. 



c^. Back brownish slate 4. mexicana, p. 38. 



d\ Back blackish. 



«^. Rump bright yellow ; 



I speculum elongate 5. Ivteola, p. 40. 



I speculum quadrate G. bananivora, p. 40. 



