Order Insectivora Author Rainer Hutterer text 1993 Smithsonian Institution Press Washington and London Editor Don E. Wilson Editor DeeAnn M. Reeder Mammal Species of the World (2 nd Edition) 69 130 book chapter http://doi.org/10.5281/zenodo.7353085 1-56098-217-9 7353085 Sylvisorex ollula Thomas, 1913 . Ann. Mag. Nat. Hist., ser. 8, 11:321 . TYPE LOCALITY: " Cameroons , Bitye, Ja River, 2,000 feet " ( 610 m ) . DISTRIBUTION: S Cameroon and adjacent Nigeria ; Gabon ; S Zaire . STATUS: IUCN - Insufficiently known. S. ollula is of conservation concern ( Nicoll and Rathbun, 1990:21 ). COMMENTS: The largest species of the genus; discussed in some detail by Dieterlen and Heim de Balsac (1979) .