THE HOWLERS. t93 



Ahnatta seincnhts^ I.acep., Mem. de I'lnst., iii., p. 489 (1800). 

 Stentor iirsma (nee fig.), Humb. and Bonpl, Obs. Zool., v.. 



p. 354(1811). 

 Myceles seniailus^ IHig., Prod. Syst. Mamm., p. 70 (181 1); 



Geoffr., Cat. Meth. Primates, p. 52 (1851); Schl., Mus. 



Pays Bas, vii., p. 156 (1876); Gray, Cat. Monkeys Brit. 



Mus., p. 39 (1870, part.). 

 Sfentor seniadiis, Geoffr., Ann. Mus., xix., p. 108 (181 2). 

 Mycetes sti-animeus^ Spix, Sim. et Vespert., Bras., p. 45, pi. 31 



(1823 ; nee Geoffr.). 

 Mycetes chrysiirits^ Geoffr., Mem. Mus., xvii., p. 66 (1829). 

 Mycetes miratus. Gray, Ann. N. H., xvi., p. 220 (1845); id. 



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

 Mycetes laniger^ Gray, Ann. N. H., xvi, p. 219 (1845); id. 



Cat. Monkeys Brit. Mus., p. 40. 

 Aluatta senicula^ Slack, Proc. Acad. Nat. Sci. PhiLid., 1862, 



P 517. 



{Plate XX.) 



Characters. — Head, neck, limbs arkd tail, dark diestnut- 

 brown ; back and sides golden-yellow ; beard in the full-grown 

 male long, the hair golden-yellow at the root, otherwise chest- 

 nut brown ; face naked, black ; chest naked, the abdomen 

 sparsely covered with long brown hairs. 



The hair of the body is soft. The tail varies in colour in 

 individual specimens, being sometimes, at its termination, of 

 the same colour as the back, and sometimes bright golden- 

 yellow. The mamnice are occasionally situated in the axillce 

 (or arm-pits). Length of body, 19}^ inches; tail, 20 inches. 



Youn°r.— Of the same colour as the parents, only a li>ttle darker, 

 the hair hard and rigid. 



3— v. I o 



