163 
Gen. LXXXI. GAMPSONYX Vigors (1825). 
Type by monotypy G. swainsoni Vig. 
Wings falling nearly an inch short of end of tail ; 
tail feathers rounded, nearly even ; tarsus short, 
feathered about half way down in front. Size 
small, length under 10 in. 
*262. Gampsonyx swainsont swainson Vigors, Brazil, S. to 
Zool. Jnl., ii., p. 69 (1825). [Near Bahia.| Matto Grosso, 
Swainson’s Pearl-Kite. N. to Amazonia, 
W. to Paraguay, 
Wing ¢ 142-145, tail 100 mm. ; @wing 156 E. Peru, 
mm. ; above leaden black with a brownish E. Ecuador. 
shade on back ; secondaries broadly tipped 
with white ; tail below much paler ; fore- 
head and sides of face orange buff; sides 
of neck and a collar encircling latter white, 
below which is an interscapulary patch of 
vinous red ; below white, with small patch 
of black on each side of upper breast ; the 
thighs pale buffish rufous, as also inner 
under wing-coverts, but not breast or 
flanks. 
*262a. Gampsonyx swainsoni meridensis Swann, Venezuela (S. 
Syn. List Accip., p. 104 (1920). [g Nevada, to Orinoco), 
Mérida, Nov. 15, 1903, alt. 3,000 metres, British Guiana. 
in coll. H. Kirke Swann and Mérida and 
Guiana examples in [ring Mus. and Brit. 
Mus. ] 
Northern Pearl-Kite. 
Size nearly similar ; wing ¢ (Mérida) 152 ; 
tail 95 mm.; 2 wing 159, tail 102 mm. ; 
wing g (Guiana) 150-153 mm. ; 2 wing 159- 
163 mm. ; below with the sides of breast 
and flanks chestnut rufous [pure white in 
_ + Birds from Margarita Island (Harvard Mus.) are smaller. 
Wing 9 145, 9150 mm., but I do not consider they are separable. 
