74 CEBUS 



have a pathetic force: "The distinction (sic) of the species of 

 the American Monkeys is very difficult, and perhaps the genus 

 Cebus the most difficult of all. Next to the difficulty of dis- 

 tinguishing them is that of determining the names which have 

 been applied to them by various Authors." 



1870. /. E. Gray, List of Monkeys, Lemurs and Fruit-eating Bats, 

 in the Collection of the British Museum. 



The species represented in the National Collection are placed 

 in Section II, Trichiura, Tribe III, Cebina, and arranged into 

 groups according to the color of the fur, or the manner in 

 which the Author supposes the hair was directed upon the 

 crown of the head during the life of the animals; but these 

 methods do not agree in their arrangement for each one con- 

 tains different species in its group. In his own arrangement he 

 follows the one indicating the growth of hair on the head, as 

 given in his paper in 1865 with its VI groups. No. I contains 

 but a single species, C. leucogenys Gray, = C. cirrifer 

 (Humb.). II has four species, C. apella (Linn.) ; C. palli- 

 Dus Gray, first described; C. cirrifer (Humb.); and C. 

 VELLEROSUS I. Gcoff. Ill Contains six species : C. capucinus = 

 C. APELLA (Linn.); and var. ? C. libidinosus Spix, as a 

 synonym ! ; C. xanthocephalus Spix, = C. variegatus 

 (Humb.) ; C. albifrons (Humb.) ; C. hypoleucus (Humb.), = 

 C. CAPUCINUS (Linn.) ; C. leucocephalus Gray, = C. albifrons 

 (Humb.) ; and C. Havescens Gray, = C. unicolor Spix. IV 

 has two species: C. robustus Max., = C. variegatus E. Geoff.; 

 and C. annellatus Gray, = C. apella (Linn.). V has also two 

 species : C. chrysopus F. Cuv. ; and C. subcristatus Gray, = 

 C. variegatus E. Geoff. VI has the remaining species C. 

 capillatus Gray, = C. variegatus E. Geoffroy. 



1876. Schlegel, Museum d'Histoire Naturelle dcs Pays-Bas. Simicr. 

 A careful review of the species of Cebus founded upon the 

 examples in the collection of the Museum in Leyden. While 

 recognizing the earlier descriptions of Linnseus' Simia apella 

 and Simia capucinus, he does not adopt the latter name for C. 

 hypoleucus (Humboldt), because in the original description he 

 finds "corpus atrum," while in the Systema Naturae the body 

 is given as "corpus fuscum." Atrum, the Author considers, 

 means sombre, obscure, dark, ("sombre, obscur, tenebreux,") 

 which is contrary to "nigrum" or black, employed to describe 

 the cap on the crown, and therefore does not accurately portray 



