172 GREEN-HUMPED DOUBLE-COLL. SUN-BIRD. 



upper tail-coverts being of the same brilliant green 

 with the head and back, and not rich violet-blue as 

 in the bird from Southern Africa. 



In the bird from the Niger, the upper parts, 

 wings and tail excepted, are of a very rich emerald 

 bronzed green; the wings and tail are brownish 

 black, on the former the edges of the feathers being 

 dull oil-green. The chin is deep velvet-black, 

 shading into the neck and upper parts of the breast, 

 which are similar in colour to the upper parts, and 

 finish on the breast by a deep bluish green band, 

 the prototype of the blue collar of the two former 

 birds ; this is succeeded by the crimson band, nearly 

 similar in extent to the same part in the N. chaly- 

 beia, and having the tips of the feathers on the 

 upper part of it narrowly edged with golden green, 

 while the belly, flanks, vent, and under tail-coverts 

 are of a pale oil-green ; the ample axillary tufts are 

 rather paler in tint. In addition, we give the dimen- 

 sion of the Cape and Niger birds : 



CAPE. NIGER. 



Entire length . . . 4 in. 6-10ths 4 in. 1-1 Oth 

 Bill to forehead . . . 7f-10ths 7-lOths 



Wing to longest quill . . 2 in. 3-10ths 1 in. 9-10ths 

 Tail from extremity of upper ) } m> M0th 



covers ) 



Tarsus ..... 6-10ths 5|-10ths 



We have not seen specimens of the Lesser 

 Double-collared Sun-bird from the Western coasts 

 of Africa which we could compare with those from 

 the Cape, but it is not impossible that the bird which 



