84 CEBUS 



account of having thus altered his original description, a custom not 

 unusual with Linnaeus, and the fact that the 12th edition of the Sys- 

 tema Naturae is the only one consulted and cited by many naturalists, 

 that confusion has arisen with the name of this species and the wrong 

 one attributed to it, a name Linnaeus only applied to the animal 

 generally known to-day as Cebus hypoleucus, but which in the future 

 must be called Cebus capucinus. The original description like all 

 given by Linnaeus is brief, but emphasizes the characters of the Monkey 

 afterwards called hypoleucus, and if this is not considered sufficient 

 evidence, the plates exhibit unmistakably, that Humboldt's species 

 was the one Linnaeus originally called capucinus. The subject is fully 

 discussed in a paper by the writer published in the Bulletin of the 

 American Museum of Natural History for 1909. 



Schlegel has added to the confusion connected with these animals 

 by separating the species from the Guianas, C. apella into two, to 

 one of which he gives the name, capucinus, although he was fully 

 aware that it was a black and white monkey which was so designated 

 by Linnaeus. 



C. capucinus Tschudi, Faun. Peruan., p. 42, is difficult to charac- 

 terize from his short and unsatisfactory description. It is not C. 

 capucinus (Linn.), for that species is never "dunkelbraun" or "rotlich 

 braun" on any part of its body at any age, and "die Kehle, die Brust, 

 der Bauch und die innere Seite der Extremitaten sind weisslich gelb" 

 does not describe C. apella (Linn.), very well, nor will it answer for 

 any stage of C. fatuellus (Linn.). Besides, the latter species is not 

 actually known to be found in Peru, nor is the description suitable for 

 C. FLAVUS E. Geoff., from Bolivia. It would seem therefore that C. 

 capucinus Tschudi (nee Linn.), must be relegated to the list of unde- 

 terminable species of the genus Cebus. 



From an examination of the series of C. imitator Thos., from 

 Boquete, in the British Museum, it would hardly seem that the speci- 

 mens possessed sufficient characters to warrant their separation from 

 the typical form. Four females, all there are of this sex, have the hair 

 on the forepart of the head much longer than the rest forming a sort 

 of bushy tuft, and this is not confined to any particular season of the 

 year. The examples were procured at a rather high elevation, 4,000 

 to 4,500 feet, and long hair and thick fur would naturally constitute 

 the coats of animals living at that height ; but if a low temperature was 

 the cause of the existence of these tufts the males should also possess 

 them, but they do not and are quite indistinguishable from other mem- 

 bers of C. CAPUCINUS throughout its range. 



