236 ALLEN'S NATURALIST'S LIBRARY. 



the matter, he saw a Monkey on a branch and an Eagle 

 beside it trying to frighten it to turn its back, when it would 

 have seized it. The Monkey, however, kept its face to its foe. 

 . . . Velasquez fired at the Eagle, and frightened it away. 

 I think it likely, from what I have seen of the habits of this 

 Monkey, that they defend themselves from the Eagle's attack 

 by keeping two or three together, thus assisting each other, 

 and that it is only when the bird finds one separated from its 

 companions that it dares to attack it/' 



Mr. Osbert Salvin met with several of these Monkeys near 

 the town of San Juan del Sur, in Nicaragua. He was walking 

 up the course of a half-dry stream when he came upon a troop 

 of Monkeys which had come to a pool to drink, and were 

 climbing about the low trees on the bank of the watercourse. 

 Most of the troop consisted of Cebus hypoleucus , but with them 

 were several Ateles of the present species, of one of which Mr. 

 Salvin wrote a description as it sat jabbering at him and throw- 

 ing down sticks from a branch above his head. Mr. Salvin 

 also told Mr. Alston that it was not unusual to see Monkeys 

 kept in confinement in the court-yards of the Spanish houses 

 in Guatemala. Amongst them were occasionally to be seen 

 specimens of Geoffrey's Spider-Monkey ; but he always found 

 that they had been brought from Nicaragua or Costa Rica, the 

 species not extending into Guatemala. 



III. THE RED-BELLIED SPIDER-MONKEY. ATELES 

 RUFIVENTRIS. 



Ateles velkrosus (?) (nee Gray), Scl., P. Z. S., 1871, p. 478. 

 Ateles rufiventris, Scl., P. Z. S., 1872, p. 688, pi. Ivii. ; Schlegel, 



Mus. Pays Bas, vii., p. 182 (1876). 

 Characters. Fur rough, upstanding less on the tail than on 



