Genera of Humming Birds. 401 



Male. — Top and sides of head, with sides of neck, glittering 

 blue ; remainder of upperparts rather dull, dark, but shining 

 green, somewhat obscured by drab on the rump and uppertail- 

 coverts. Shoulders and wing-coverts green, like the back, 

 but all the quills dark hair brown with a faint gloss of purplish. 

 Tail dark glossy green ; the outer pair of feathers broadly 

 tipped with drab. Underparts soiled white, the middle of the 

 throat tinged with clayey buff (a strain, probably), the feathers 

 along its sides with large, crescent shaped, subterminal spots 

 of blue. Sides of breast greenish-blue. Sides of body brilliant 

 green. Bill (in the dried specimen) dull reddish-brown or 

 brownish-orange, lightest at the base, deepening to horn 

 colour at the tip. 



Wing, 2"07in. Tail, V2^. Length of culmen from base, 

 i'02; from feathers, o-88. Width of bill at base, 0'i3. 



Similar to C. cyaneicollis, but smaller, with shorter wings, 

 shorter and squarertail, but longer and slender bill ; iridescent 

 colours on sides of neck bordering the throat, blue like the 

 crown instead of greenish ; very much more green on sides of 

 breast and body, the white of the underparts, especially of the 

 throat and jugulum, being confined to a narrow central space ; 

 upper mandible light reddish at the base instead of black 

 as in cyaneicollis. 



Type, male adult (Nos. 24, 125, Collection of William 

 Brewster). 



Lelxippus VIRIDICAUDA, Berlp., Ibis, 1883, p. 493. 



Leucippîis chionogaster, Sclat. and Salv., P.Z.S., 1876. 



Green tailed Leucippus. 



Le Leiicippe de Berlepsch. 



Habitat. — Huiro, Peru. 



Male? — Suprea aureo-viridis, subtus sericeo albus, gulae et 

 colli lateribus maculis parvis, lateribus pectoris hypochon- 

 driisque aureo viridibus; sub candalibus albis,mânoribus macula 

 centrali viridi-aurea; rectricibus glauco viridibus unicoloribus. 

 ''Berlepsch in Orn. Per."" 



This rare species was discovered at Huiro, Peru, by 

 Mr. Whitely. 



