290 I.ASrOPYGA 



1902. /. Anderson, Zoology of Egyptian Mammals. 



Two species are here given: C. sthiops (nee Linn.), = L. 



GRisEOViRiDis (Desm.) ; and C. pyrrhonotus which is an 



Erythrocebus. 

 1902. Neumann, in Sitsungsberichte Gesellschaft Naturforschender 



Freunde. 



Lasiopyga hilgerti, and L. ellenbecki — L. hilgerti, first 



described under Cercopithecus. 



1904. Pocock, in Proceedings of the Zoological Society of London. 

 Lasiopyga sclateri described for the first time as Cercopithe- 

 cus SCLATERI. 



1905. Matschie, in Sitsungsberichte Gesellschaft Naturforschender 

 Freunde. 



Lasiopyga kandti first described as Cercopithecus kandti. 



1905. Forbes, in Nature. 



Lasiopyga preussi (Matschie), redescribed as Cercopithecus 

 crossi. 



1907. 0. Thomas, in Proceedings of the Zoological Society of Lon- 

 don. 

 Lasiopyga denti first described as Cercopithecus denti. 



1907. R. L Pocock, in Proceedings of the Zoological Society of Lon- 

 don. 



This somewhat elaborate paper on the species of Lasiopyga, 

 is entitled ''A Monographic Revision of the Genus Cercopithe- 

 cus," and contains descriptions of nearly all the species de- 

 scribed up to the date of its publication. The Author's material 

 for his undertaking was inadequate, consisting of the skins in 

 the Collection of the British Museum, and the skins and living 

 members of the genus in the Menagerie of the Zoological 

 Society in Regent's Park, London. This material, though con- 

 siderable in number of specimens, gave the Author no personal 

 knowledge of many species in Continental Museums not repre- 

 sented in the British Museum, and thus placed him at a dis- 

 advantage. Cranial characters, which are of supreme im- 

 portance in the discrimination of species were not considered 

 at all, for the reason as he states, that "lack of proper material 

 has prevented me from making use of skull characters," and 

 so at the outset he was deprived of one of the most important 

 methods of determining species. 



The Author commences with a not entirely complete List 

 of the genera proposed for the Guenons, and their types. 



