156 INSESSORES. 
Black-headed Humming Bird. 
that may not be found at some season of the year. 
On the lone island of Juan Fernandez, in the vicin- 
ity of the very cave which tradition has dedicated to 
the memory of the renowned Robinson Crusoe, two 
elegant species have been obtained. In the Andes, 
whose lofty summits are capped with eternal snows; 
in the deep recesses of the craters of extinct volca- 
noes; and where Chimborazi and Cotopaxi poured 
forth their streams of liquid fire, — there these little 
