LI*T OF SPECIES. 21 



[Case 53.] 

 E1UOCNEMIS. " Puff-legs." 



This genus contains a large number of species, all of which exhibit 

 the peculiar tuft of woolly feathers on the tarsi, which have gained 

 for them the popular name of " Puff-legged '' Humming-birds. The 

 tail is forked, the wings are long and pointed, and the nostrils not 

 hidden by plumes. The colouring of the tufts onthe feet, which look 

 like little powder-puffs, varies considerably with the species, being 

 black in one, pale brown in another, chestnut and white in two more, 

 while in the other thirteen it is pure white. 



The seventeen species included in this genus inhabit South America 

 from Venezuela and Colombia, through Ecuador into Peru, and Bolivia. 



[Case 54.] 



PANTERPE. " ElRE-THROATS." 



The single species known is distinguished by a brilliant metallic 

 throat. Head and centro of the breast deep blue. The sexes are 

 alike in their rich colouring. Tarsi bare. Panterpe insignis, from Costa 

 Pica and Veragua. 



[Case 55.] 

 LEUCOCHLORIS. " White-throats." 



The tail is rounded, and the bill longer than the head and rather 

 curved ; the tarsi clothed. One species known — L. albicollis, from 

 Brazil. 



[Case 56.] 

 AGYPTRIA. « Emeralds." 



A very widely-spread genus, being found over the whole of Central 

 America, and ranging over the entire continent of South America, with 

 the exception of Chili and the countries south of Brazil. The bill is 

 long and rather straight, the wings narrow, and the first primary some- 

 what sickle-shaped. Wo less than twenty species are known, all of 

 which appear to have light-coloured bills, which are probably red when 

 the birds are alive. 



[Case 57.] 

 EUPHERUSA. « Stripe-tail.' 



Three species have been described, all from Central America. 



