GENEBA AND SPECIES. 191 



eoverts light olive brown ; bill and feet blackish 

 trown. 



Total length, 4 inches ; biU, ; tail, 2^. 



The females resemble the males in general 

 colour; but are less brilliant, smaller in size, 

 have the throat and crest plumes much less 

 developed, and moreover, have no black feathers 

 in the crest. 



Locality : the higher regions of the Columbian 

 Andes ; Santa Fe de Bogota. In G-ould's cabinet. 



This is the Warrior of collectors. 



Trochilus ( oxypogeri) Lindeni, Plate XI. Lin- 

 den's Helmet-crest, so called in honour of its 

 discoverer, M. J. Linden, of Luxembourg, may 

 be thus described. 



The adult male has the head and lengthened 

 crest black, with a narrow stripe of feathers 

 down the centre of the latter, joined on the 

 forehead by two lines of white, which proceed 

 along each side of the base of the bill ; down 

 the centre of the throat depends a similar elon- 

 gated tuft of white feathers, in the middle of 

 which there is a faint indication of the rich 

 shining green mark so conspicuous in Gruerin's 

 Helmet-crest; the black of the head is bounded 

 at the sides and in front by a broad band of 

 white. Upper surface, wing-coverts, and two 

 tail-feathers, bronzy-green ; the latter with a 

 narrow line of white down the basal portion of 

 the shaft ; lateral tail-feathers coppery bronze, 

 with the basal portion of the shafts white, which 



