The applied entomologist Fritz Peus (1904-1978) built a collection of fleas that was acquired by the Muséum d'histoire naturelle de Genève, Geneva, Switzerland in 1977; it contains type specimens of most of the flea taxa that he described. These type specimens are listed and the current combination given for each. The whereabouts of other type specimens is given where known. Type specimens that other entomologists exchanged with Peus and present in his collection are listed separately.