26 ATELEUS 



= A. VARiEGATUS ; b. sides of face and beneath body, white, 

 or reddish white, or yellowish white, more or less prom- 

 inent. Three species are placed here; A. belzebuth ; A. 

 fuliginosus — A. belzebuth ; A. pan described for the 

 first time; y. crest black but short, body beneath red or 

 reddish, above brownish red, or grayish, more or less pro- 

 nounced, sometimes uniform black, a color which prevails on 

 the extremities, and often on top of the head. Two species are 

 found here; A. rufiventris and A. geoffroyi. The second 

 division has but one species, A. hybridus characterized by a 

 small head with a large clear spot, and no crest. The second 

 group contains the woolly Spider Monkeys, A. arachnoides 

 and A. hypoxanthus = A. arachnoides, one species, now in 

 Brachyteleus. 

 1879- ' Alston, Biologia Centrali Americana. Mammalia. 



1882. Four species of Ateleus are here recorded. A. ater ; A. rufi- 

 ventris ; A. GEOFFROYI ; A. vellerosus = A. belzebuth ; of 

 which A. pan Schlegel, and A. fuliginosus Kuhl = A. belze- 

 buth are considered synonymous ; though the Author thinks 

 that the original description of Kuhl's species applies better to 

 the dull gray varieties of A. geoffroyi. The geographical dis- 

 tribution of the species recognized is carefully given. 



1883. Von Pelseln, Brasilische Sdugctliiere, Rcsultate von Johann 

 Natterer's Reise in den Jahren 1817 bis 1835. 



Two species of Ateleus only are here recorded. A. paniscus, 

 from Fazenda do Padre Battista, May, am Flusse Sararige- 

 schossen ; Montogrosso, November ; Rio Guapore, volta del 

 campo dos Veados, July ; Rio Marmore, August ; Rio Madeira, 

 etwas oberhalb des Rio Abuna, September ; and A. v.vriegatus. 



GEOGRAPHICAL DISTRIBUTION OF THE SPECIES. 



The Spider Monkeys have a wide distribution extending from the 

 State of Vera Cruz in Mexico, through Central America into northern 

 South America, where they are found in the forests through which the 

 Orinoco and Amazon with their tributaries flow, to the Pacific Coast 

 States of Colombia, Ecuador and Peru. In the State of Vera Cruz, 

 Mexico, and southward into Guatemala, in which country it goes from 

 the Atlantic to the Pacific, A. pan is found and is the only representa- 

 tive of the genus in Mexico. Two other species are known to inhabit 

 Central America. A. geoffroyi from Nicaragua, and A. ater, both 



