LAGOTHRIX S3 



GENUS LAGOTHRIX. WOOLLY MONKEYS. 



1- 2— 2> ^- 1— 1 J '^^- 3— 3> ^- 3—3 -j"- 



LAGOTHRIX E. Geoff., Ann. Mus. Hist. Nat. Paris, XIX, 1812, p. 

 106. Type Lagothrix cana E. Geoffrey. 

 Gastrimargus Spix, Sim. et Vespert. Bras., 1823, p. 39, pis. 

 XXVIII, XXIX. 



Head round ; body heavy ; tail long, prehensile ; limbs of moderate 

 length, with thumb and great toe well developed, having the nails of 

 fingers and toes flat and pointed; fur woolly. Skull: an articulation 

 exists between the premaxillaries and nasals at a right angle to their 

 suture. Incisors small, upper incisors the largest; canines large with 

 a frontal groove. 



The species of this genus have a round head covered with thick, 

 short hairs, and with the black face are not unlike the negro in 

 appearance. The under fur is very woolly in texture, and this 

 character helped in the definition of the name bestowed by Humboldt 

 upon the first specimen he procured, lagotricha. The genus has but 

 few species, characterized by a thickly built heavy body, with limbs 

 moderately lengthened, a well developed thumb and great toe, with 

 compressed and pointed nails. The animals are gregarious, slow in 

 movement, arboreal, and of a mild and tractable disposition. 



LITERATURE OF THE SPECIES. 



1811. Humboldt and Bonpland, Recueil d' Observations de Zoologie 

 (1815) et d'Anatomie Comparee. 



Lagothrix lagotricha first described as Simia lagotricha. 



1812. E. Geoffroy Saint-HUaire, in Annales du Museum d'Histoire 

 Naturelle, Paris. 



Lagothrix cana, young male, first described; and L. lago- 

 tricha redescribed as *L. humboldti. 



*E. Geoffroy in this instance gfives as the sole synonym of his Lagothrix 

 humboldti the "Caparro Humb. Rec. d'Obser. p. 321," showing evidently that 

 he had seen either the MS. or the published work, probably the first, as Humboldt 

 in his article had given a Latin name to the species, and which in this case I 

 prefer to retain. . 



