Template:Thomas, 1923j

• Thomas, O. 1923. Two new Guenons from the Ivory Coast, West Africa. The Annals and Magazine of Natural History, including Zoology, Botany, and Geology, ser. 9, 11(65): 607–608. DOI: 10.1080/00222932308632896 BHL  
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Nomenclatural acts

• Date of publication: May 1923

New names

(List may be incomplete)

• Cercopithecus buettikoferi pygrius subsp. n. [p. 607]
• Cercopithecus campbelli lowei subsp. n. [p. 608]