THE SPIDER-MON KEYS. 231 
- in pilfering small articles of ‘clothing, which it conceals in its 
sleeping place.” 
The Coaitas are like the rest of the Cedide, essentially quad- 
rupedal, but they occasionally assume the erect posture. ‘They 
are purely arboreal in habit, living in small companies in the 
very high trees of the forest. 
Their geographical distribution is very wide. They extend 
over the whole area of the Ceézde, t.e., over two of the sub- 
regions, the Brazilian and Mexican, of the Neotropical Region. 
I. THE VARIEGATED SPIDER-MONKEY. ATELES VARIEGATUS. 
Ateles marginatus (nec Geoffr.), Humb. Obs. Zool., pp. 340, 
354 (1811). 
Ateles variegatus, Wagner in Schreb., Saugeth., 1, p. 313 
(1840); id. Abhandl. Akad. Miinch., v., p. 420 (1847) ; 
Selaten, Ea Z..o3, £670, ps, 008 ;-1071,.pp: 20, 225 } Gray, 
Ann. Nat. Hist. (4);-vi. (1870), p. 472. 
Sapajou geoffroyt (nec Kuhl), Slack, Proc. Acad. Nat. Sci. 
Piilad... e502, io; G10) =r): 
Ateles bartletti, Gray, P. Z. S., 1867, p. 992, pl. xlvil. 
Ateles melanochir, var. Gray, Cat. Monkeys Brit. Mus., p. 43 
(1870, in part). 
Ateles chuva, Schl., Mus. Pays Bas, vii., p. 175 (1876). 
(Plate XXT.) 
Characters—Male—Fur of body abundant, long, and soft ; 
hair of back and top of head long and directed forwards, and 
projecting over the forehead ; beneath and behind the cheeks 
a band of longish hairs, directed forwards. ‘Top of head, back, 
front aspect of the entire arms, and of the legs to the knees, 
hands, feet, and upper side of tail glossy blue-black; a band 
