188 GENERA AND SPECIES. 



tip, which is yellowish white, the two middle 

 tail-feathers excepted; wings dusky, with a tinge 

 of violet; the base of the lower mandible and the 

 feet yellow. 



Total length, 4| inches ; beak, H ; tail, If. 



Locality : In the Earl of Derby's cabinet. 



Mr. Gould, in Proceed. Zool. Soc., describes 

 two species, viz. Trochilus (Ramphomicron) rufi- 

 ceps, a normal species, thus characterized: 

 Crown deep rusty-red ; throat lustrous bronze- 

 green ; under surface brownish green ; tail large 

 and forked, and of a pure bronze; wings pur- 

 plish brown ; bill black. 



Total length, 3| inches ; bill, f ; tail, 2. Mr. 

 Gould remarks that this species is nearly allied 

 to T. heteropogon, but is much smaller. In 

 Gould's cabinet. 



Trochilus (Ramphomicron?) inornatus. All 

 the upper surface bronzy-green ; under surface 

 brown, with bronzy reflexions on the flanks; 

 feathers of the throat tipped with cerulean blue; 

 wings and tail bronzy, the feathers of the latter 

 tipped with buff; bill black. 



Total length, 3| .inches; bill, f ; tail, 1. 

 Abnormal. 



Both the above species inhabit Bolivia. In 

 Gould's cabinet. 



Mr. Gould, in addition to those recorded, 

 possesses a new species, Ramphomicron Stanleyi, 

 as yet to be described. The birds of this genus 

 appear to be tenants of mountain elevations ; 



