From Wiktionary, the free dictionary
Rhodesian man (plural Rhodesian men)
- A long-extinct hominid who lived in Africa.
- Used other than figuratively or idiomatically: see Rhodesian, man.
1911, Margaret Louisa Woods, Pastels Under the Southern Cross[1], Smith, Elder, →OCLC, page 252:If Rhodesian men cannot get British wives, they are likely to marry Boer ones