1979, Mammalian Species
Muridae, Subfamily Cricetinae, Subgenus Haplomylomys. Fifteen subspecies of P. eremicus are presently recognized of which eight are known only from their type localities and are indicated below with an asterisk (*) (Hall and Kelson, 1959; Anderson, 1972; Lawlor, 1971a, b). P. e. eremicus (Baird, 1858:479), see above (arenarius Mearns a synonym). P. e. anthonyi (Merriam, 1887:5), see above. P. e. /raterculus (Miller, 1892:261), see above (herronii Rhoads, nigellus Rhoads, and homochroia Elliot are synonyms).