Genera of Humming Brids. 69 



metallic golden-green, followed by a long narrow tuft of 

 metallic rose-lilac. Rest of underside buffy bronze-green. 

 Undertail-coverts bufï with bronze in the centre of feathers. 

 Wings purplish-brown. Bill black. 



Total length, 4|in. Wing, 2|[. Tail, 2^. Culmen, \. 



Female. — -Upperside bronze, reddish on forehead, lower 

 part of rump, and uppertail-coverts. Underside uniform 

 grayish-bronze, with the lower part of abdomen and under- 

 tail-coverts buff. Tail bronze. Maxilla black. Mandible 

 flesh colour at base, rest black. 



Total length, 3|in. W^ing, 2. Tail, 2. Culmen, \. 



This species was probably discovered by Mr. Boissoneau. 



^94. Chalcostigma OLIVACEA, Lawr., Ann. N.Y., Lye, 



Nat. Hist., 1867, p. 44. 



Olivaceous Thorn-bill , Gould., Mon. Troch., Suppl., 1886, 

 p. 62. 



Le Ramphomicro7i d'un pâle olivâtre, Muls., Hist. Nat., 

 Ois. jMou., 1876, t. iii., p. 170. 



Habitat. — Peru and Bolivia. 



Male. — Upper surface and tail dull olive-green. Wrings light 

 purplish-brown. Chin and upper part of throat metallic green, 

 ending in a bunch of elongated feathers, metallic crimson, 

 terminating in violet-purple. Undersurface brownish olive. 

 Vent grayish-white. Undertail-coverts olive-green, the feathers 

 margined with pale rufous. Bill and feet black. 



Total length, 5iin. Wing, 3J. Tail, 2\. Culmen, -f-^. 



There does not seem to be any difference in the plumage of 

 the sexes. " Elliot, loc. cit." 



Surely the plumage of the female must be without any of 

 the metallic feathers on the throat. " Editor." 



95. Chalcostigma stanleyi, Bourc and Muls., Ann. Soc. 



Agri., Lyon., 1850, p. 199. 



Ramphomicron stanleyi, Gould, Mon. Troch., vol. iii., 

 p. 185. 



Ramphomicron vulcani, Gould, Jard., Cont. Ornith., 1852, 

 P- 135- 



