ANNOTATIONS AND ADDITIONS. 275 



saw this nocturnal monkey living in the menagerie of the 

 Jardin des Plantes at Paris. (See the work above cited, T. ii. 

 p. 340.) Spix also found this remarkable little animal on 

 the Amazons river, and called it Nyctipithecus vociferans. 



Potsdam, June 1849. 



