SYNOPSIS OP THE SIMIAD^!. 2G1 



p. 90 ; xix. p. 106. Atele chuva, Desm. Mamm. p. 75. 

 Chuva, Humb. Obs. Zool. p. 354. Black: face surrounded 

 with white or yellowish ; breast and insides of the limbs 

 grayish-white. Inhabits province of Jaen, banks of the 

 rivers Santiago and Amazons. 



6, A. ARACHNOIDES, Spider Monkey. Geoff 1 . Ann. du 

 Mus. xiii. p. 90 ; xix. p. 109. Simia arachnoides, Humb. 

 Obs. Zool. p. 354. Atele arachnoide, Desm. Mamm. 

 p. 75. Grayish-yellow ; fur very soft ; eyebrows black. 

 Inhabits Brasil. 



7. A. MELANOCHIR, Black-Handed Coaita Atele melono, 

 chiere, Desm. Mamm. p. 76. Gray ; upper part of the 

 head, hands, and an oblique spot upon the knees, brownish- 

 black. Native country unknown. 



Described by Desmarest, from a specimen in the Collection at 

 Paris. 



GENUS XIX. Lagothrix^ HUMBOLDT. 



Head round ; facial angle about 50 ; hands with five fingers ; 

 tail strongly prehensile, naked and callous on the under side of the 

 extremity ; os hyoides slightly apparent on the outside. 



1. L. HUMBOLDTII, thcCapparo. Simia lagotricha, le capparo 

 du Rio Guaviare, Humb. Obs. Zool. i. pp. 322, 354. 

 Lagothrix Humboldtii, Geoff. Ann. duMus. xix. p. 107. 

 Lagotriche capparo, Desm. Mamm. p. 76. Grayish- 

 black; hair long and soft. Inhabits banks of the 

 Guaviare. 



2. L. CANUS, Gray Lagothrix Geoff. Ann. du Mus. xix. 

 p. 107. Lagotriche grison, Desm. Mamm. p. 77. Grayish- 

 olive ; head, hands, and tail, reddish-gray ; the hair ?ery 

 short. Inhabits Brasil. 



GENUS XX Cebus, XERLEBEN. 



The head round ; muzzle short ; facial angle about 60 ; oa 

 kyoides small ; hands, with a lengthened well-formed thumb ; tail 



