- O. flavescens
- Note: Mammal Species of the World (2005): There is some controversy regarding the validity of O. byronia (de Blainville, 1920) or O. flavescens (Shaw, 1800) (King, 1978). Rodriguez and Bastida (1993) reviewed the information and concluded that flavescens was a valid name with priority. Also see Oliva (1988) who argued for O. byronia. Synonyms allocated according to Cabrera (1957).