198 Lloyd's natural history. 



brown colour of the roots of the hair ; and from the species 

 next to be described — the Brown Howler (A. tirsina) — by the 

 length of the fur and the absence of the reddish-brown tips to 

 the hairs. 



Distribution. — Apparently confined to the Lower Amazon, in 

 the vicinity of Para. 



Habits. — The same as those of the species already described. 



IV. THE BROWN HOWLER. ALOUATTA URSINA. 



Stentor ursina^ Humb. and Bonpl, Obs. Zool., i., pi. 30 (fig. 



nee descr. ; 181 1). 

 Stentor flavicauda J Id. t. c. p. 355 (181 1). 

 Stentor ursinus^Qtd^h., Ann. Mus., xix., p. loS (181 2). 

 Stentor fuscus^ Geoffr., t. c. p. 108 (181 2). 

 Mycetes fuscuSj Kuhl, Beitr, Zool., p. 29 (1820); Spix, Sim. et 



Vespert., Bras., p. 43, pi. 30 (1823). 

 Mycetes bicolor^ Gray, Ann. N. H., xvi., p. 214 (1845); id. Cat. 



Monkeys Brit. Mus., p. 40 (1870). 

 Mycetes ursinuSy Is. Geoffr., Cat. Meth. Primates, p. 55 (part., 



1851); Gray, Cat. Monkeys Brit. Mus., p. 39 (1870); 



Schl., Mus. Pays Bas, vii., p. 155 (1876). 

 Aluatta tirsina. Slack, Proc. Acad. Nat. Sci. Philad., 1862, 



p. 517- 

 Mycetes flavicauda, Schl., t. c. p. 147 (part., 1876). 



Characters. — General colour shining yellowish-red, or dark 

 brownish-yellow ; hairs rather rigid, black with yellowish tips ; 

 hairs of the shoulder ringed with black. When half-grown the 

 limbs and tail are very dark brown, nearly black ; tail shorter 

 than the body, olive black, with two yellow lateral stripes. 

 Length of the body, 23 inches; of the tail, 22 inches. 



