OLIVE-BACKED SUNBIRD. 137 



the remainder of the upper plumage, is olive-green, 

 over which there is a strong tinge of yellow, with- 

 out any of that metallic gloss seen on the head and 

 neck : the side-feathers on the breast, just beneath 

 the wing, are of a clear and delicate straw-yellow, 

 while the whole of the body, belly, vent, and under 

 tail-covers are of a deep and uniform cinereous- 

 grey : the quills and tail-feathers are dark hair- 

 brown edged with yellowish olive. 



Having a specimen of the Soui manga vert et 

 gris of Vieillot now before us, we shall describe it, 

 although we know not the country from whence it 

 came. It differs from the above in being somewhat 

 smaller, and in having the bill apparently less 

 curved : the olive on the back is not so yellow : the 

 shining green plumes of the head do not extend so 

 low down from the nape, and they terminate on each 

 side of the head just below the ears : the whole co- 

 lour of the under plumage, from the chin down- 

 wards, is of a clear and uniform cinereous, unbroken, 

 as in all full plumaged birds, by any mixture of 

 other coloured feathers, and without the slightest 

 trace of any spot of green upon them. Now this 

 may either be the full plumaged female, or a differ- 

 ent species ; in which latter case it may retain the 

 name of Cyanocephalus : but we are clearly of opi- 

 nion that it is not a young male. 



Total length about 5 inches ; bill from the gape, 

 T 9 3 ; wings, 2 T ^ ; tail beyond, \ ; ditto, from the 

 base, l T 7 a ; tarsus, T V 



