BRACHYTELEUS 49 



GENUS *BRACHYTELEUS. WOOLLY SPIDER 

 MONKEYS. 



!• 2— 2> ^- 1— 1> "• 3— 3> "^' S— 3 3"- 



BRACHYTELES ( !) Spix, Sim. et Vespert. Bras., 1823, p. 36, pi. 

 XXVII. Type Brachyteles ( !) macrotarsus Spix, = Ateles 

 ( !) ARACHNOiDES E. Gcoffroy. 

 Eriodes I. Geoff., Mem. Mus. Hist. Nat., Paris, XVII, 1829, p. 160. 



Head round; body heavy; limbs long, slender; fur woolly; face 

 flat; septum of nose narrow; nostrils circular, approximate, directed 

 downwards ; thumb rudimentary or wanting ; nails sharp, compressed ; 

 tail longer than body, naked beneath, prehensile. Skull has a rounded 

 braincase ; incisors of equal size ; canines small, of same length as the 

 incisors, while the molars, which are square shaped and heavy, are 

 higher than the canines. 



The fur of this species is woolly in texture and not brightly 

 colored, while the face is naked and often a brilliant red, the color 

 being intensified when the animal is excited. The arms are long and 

 slender, and the hand is without a thumb or with merely a rudiment 

 of one. The tail is long, naked on the under side at the tip, and 

 prehensile. The nails of the hands and feet are compressed and acute. 



LITERATURE OF THE SPECIES. 



1806. E. Geoffroy Saint-Hilaire, in Annates du Museum d'Histoire 

 Naturelle, Paris. 



In a paper upon the species of Ateles ( !) Brachyteleus 

 ARACHNOIDES is first described as Ateles ( !) arachnoides. 



1820. Kuhl, Beitrage zur Zootogie und vergteichenden Anatomie. 



Among the species of Ateleus here given, two of the genus 

 Brachyteleus are included as Ateles ( !) arachnoides, speci- 

 men without a thumb, and A. hypoxanthus, example with a 

 thumb = Brachyteleus arachnoides. 



1823. Spix, Simiarum et Vespertilionum Brasiliensium, Species Novce. 



*Bpaxis short, and reXos.eos end == Brachyteleus nee Brachyteles. See 

 I. Geoffroy, Cat. Primates, p. 51. 



