ALOUATTA 277 



of the tail "d'un noir olivatre et ornee lateralement de deux stries 

 jaunes." A tail colored like that has not been seen thus far with a 

 species of Alouatta in any collection. Tschudi states (1. c.) that this 

 monkey is found in Peru in 11° Latitude, but I am not aware that 

 he sent any specimens to Europe. Kuhl states (1. c.) that a specimen 

 was in the Paris Museum, but this must have been a mistake. Geoff roy 

 does not mention it, and it is not there now. 



I have placed Humboldt's species among the synonyms of A. 

 ursina with a ? ; and the doubt can only be settled satisfactorily by the 

 acquisition of specimens. 



AxouATTA SENictJLUs (Linnaeus). 



Simia seniculus Linn., Syst. Nat., I, 1766, p. 37 ; Bodd., Elench. 



Anim., 1784, p. 61. 

 Cebus seniculus Erxl., Syst. Reg. Anim., 1777, p. 46; Fisch., Syn. 



Mamm., 1829, p. 42. 

 Alouatta seniculus Laceped., Mem. Instit., 1800, III, p. 89; Slack, 



Proc. Acad. Nat. Scien. Phil., 1863, p. 516; Forbes, Handb. 



Primates, I, 1894, p. 192, pi. XVIII. 

 Mycetes seniculus Illig., Prodr. Syst. Mamm. et Av., 1811, p. 70; 



Desm., Mamm., 1820, p. 77; Less., Spec. Mamm., 1840, p. 



117; Wagn., Schreb., Saugth. Suppl., I, 1840, p. 179; V, 1855, 



p. 68 ; Gray, Ann. Mag. Nat. Hist., XVI, 1845, p. 219 ; Id. Cat. 



Monkeys, Lemurs and Fruit-eating Bats, Brit. Mus., 1870, p. 



40; I. Geoff., Cat. Primates, 1851, p. 52; Dahlb., Stud. Zool. 



Fam. Reg. Anim. Natur., fasc. I, 1856, p. 175 ; Reichenb., 



Vollstand. Naturg. Affen, 1862, p. 163, figs. 156-157; Flow., 



Proc. Zool. Soc. Lond., 1862, p. 335 ; Sclat., Proc. Zool. Soc. 



Lond., 1863, p. 374; Schleg., Mus. Pays-Bas, Simise, 1876, p. 



156; Forbes, Proc. Zool. Soc. Lond., 1880, p. 632, (footnote). 

 Simia (Stentor) j^mcM/M.y Humb., Rec. Obs. Zool., I, 1811, (1815), 



p. 354. 

 Simia (Stentor) stramineus Humb., Rec. Obs. Zool., I, 1811, 



(1815), p. 355. 

 Stentor seniculus E. Geoff., Ann. Mus. Hist. Nat. Paris, XIX, 



1812, p. 108; Id. Cours Hist. Nat. Mamm., 1828, p. 21, 



9me Lecjon. 

 Stentor stramineus E. Geoff., Ann. Mus. Hist. Nat. Paris, XIX, 



1812, p. 168. 

 Mycetes stramineus Kuhl, Beitr. Zool., 1820, p. 29 ; Desm., Mamm., 



1820, p. 78 ; Spix, Simiar. et Vespert. Bras., 1823, p. 35, pi. 



