LAGOTHRIX '55 



banks of the Rio Guaviare and Rio Negro) ; L. tschudi — L. 

 LAGOTRiCHA, Peru, and L. geoffroyi = L cana, Cayenne. A 

 willingness to accept slight shades of coloration, (easily the 

 result of the age of the individual), as having specific value, 

 is discernible throughout the article. 



1862. Reichenhach, Die Vollstdndigste Naturgeschichte der Aifen. 



Lagothrix in this work contains, L. humboldti = L. lago- 

 tricha; L. cana; L. infumata; and L. castelnaui = L. cana. 



1862. Slack, in Proceedings of the Academy of Natural Sciences of 

 Philadelphia. 



In this review of Lagothrix but one species is recognized: L. 

 humboldti Geoff., = L. lagotricha Humb. The latter name 

 is among the synonyms but the law of priority is disregarded. 

 L. CANA, in fact all described forms, are considered as merely 

 representing a variety of coloring of the one species resulting 

 from age and sex. 



1876. Schlegel, Museum d'Histoire Naturelle des Pays-Bas, Simi(B. 

 Three species are recognized : L. cana ; L. humboldti = L. 

 lagotricha, which name is rejected as insufficiently described, 

 and L. infumata Spix made a synonym ; and L. poppigii 

 Schinz, = L. lagotricha; with L. castelnaui, L. humboldti 

 Tschudi, and L. tschudi juv. Pucheran, as synonyms. 



1883. A. von Pelzeln, Brasilische Sdugethiere. 



Two species are apparently recognized in this List, L. cana 

 and L. infumata; but under the last as its first synonym is 

 Simia cana Geoff. (!) Of course a form cannot be both a 

 species and a synonym, and the method adopted by the Author 

 is puzzling to say the least. If cana and infumata are the same, 

 then CANA, having been published eleven years before infumata, 

 becomes the name of the species, and infumata the synonym, 

 but never otherwise as von Pelzeln has given it. L. hum- 

 boldti Geoff., = L. LAGOTRICHA Humb. ; L. geoffroyi Pucher. ; L. 

 poppigii Schinz; L. tschudi Pucher.; L. castelnaui Geoff.; are 

 all considered synonyms of L. infumata, but which is itself a 

 synonym of L. cana Geoff., this last being considered the adult. 



1907. D. G. Elliot, in Annals and Magazine of Natural History. 

 Lagothrix lugens ex Colombia first described. 



1909. D. G. Elliot, in Annals and Magazine of Natural History. 

 Lagothrix thomasi^ and L. ubericola first described. 



