CEBUS 71 



divides his examples into three varieties or groups : a. 

 "Individus a pelage ordinaire, sans pinceau," and group b. 

 comprising "Individus semblables au precedents, mais avec 

 pinceau"; c. "Individus a couleurs semblablement disposees, 

 mais plus pale." These last are those which died in the Men- 

 agerie, and whose color has been affected by captivity. Of 

 course group b. for which is cited C. fatuellus (Linn.), is 

 quite distinct specifically from any form of C. apella (Linn.) ; 

 C. robustus Kuhl, = C. variegatus (E. Geoff.) ; C. variegatus 

 (E. Geoff.) ; C. cirrifer (Humb.) ; C. vellerosus first 

 described ; C. frontatus Kuhl ; C. elegans I. Geoff. ; C. 

 azar^ Rengg. ; C. barbatus E. Geoff., = C. flavus E. Geoff. ; 

 C. flavus E. Geoff. ; C. capucinus E. Geoff., = C. apella 

 (Linn.); C. castaneus Geoff., first described; C. versicolor 

 Pucher., = C. albifrons (Humb.) ; C. chrysopus F. Guv.; C. 

 hypoleucus (Humb.), = C. capucinus (Linn.). 

 1855. Wagner, Schreber, Die Saugthiere in Abbildungen nach der 

 Natur mit Beschreibungen. Supplementband. 

 Ten species and numerous varieties of Cebus are here recorded, 

 the Author evidently experiencing the same difficulty in dis- 

 tinguishing the specific rank of his specimens as was exhibited 

 in the volume published in 1840. He commences with C. 

 azarvE Rengg.; C. fatuellus (Linn.), of which as varieties 

 he places jS. C. robustus Kuhl, = C. variegatus E. Geoff. ; y. 

 Sajou cornu var. a moustaches F. Cuv., = C. frontatus Kuhl ; 

 s. C. cristatus F. Cuv., = C. cirrifer (Humb.) ; e. C. apella 

 (Linn, nee Auct.). He then cites C. elegans I. Geoff., = C. 

 AZAR« Rengg. ; C. libidinosus Spix, a species he does not 

 know, and cites the descriptions ; C. capucinus Geoff., = C. 

 APELLA (Linn.) ; C. olivaceus Schomb., — C. apella (Linn.) ; 

 C. hypoleucus Geoff., = C. capucinus (Linn.) ; C. nigrivittatus 

 Natter., = C. apella (Linn.) ; C. gracilis Spix, = C. albi- 

 frons (Humb.) ; then follow three species unknown to him, 

 C. ALBIFRONS (Humb.) ; C. flavus E. Geoff.; and C. chry- 

 sopus F. Cuv. ; C. versicolor Pucher., = C. albifrons 

 (Humb.) ; C. xanthosternos Max., — C. variegatus (E. 

 Geoff.) ; of which the three following C. xanthocephalus Spix, 

 = C. variegatus Geoff. ; C. monachus F. Cuv., = C. varie- 

 gatus E. Geoff. ; and C. cucullatus Spix, = C. variegatus E. 



