Class Mammalia Linnaeus, 1758 - mammals
   Subclass Theria Parker & Haswell, 1897
     Order Soricomorpha Gregory, 1910 see Suborder Soricomorpha Gregory, 1910
       Family Soricidae Fischer, 1814 - shrews
         Subfamily Soricinae Fischer, 1814
           Tribe Soricini Fischer, 1814
             Genus Sorex Linnaeus, 1758 - long-tailed shrews
               Subgenus Otisorex De Kay, 1842
                 Sorex cinereus group
                   Sorex cinereus Kerr, 1792 - masked shrew
                     1 [Sorex cinereus cinereus]ᵀ Kerr, 1792
                     2 Sorex cinereus acadicus Gilpin, 1867
                     3 Sorex cinereus fontinalis Hollister, 1911
                     4 Sorex cinereus hollisteri Jackson, 1900
                     5 Sorex cinereus lesueurii (Duvernoy, 1842)
                     6 Sorex cinereus miscix Bangs, 1899
                     7 Sorex cinereus ohionensis Bole & Moulthrop, 1942
                     8 Sorex cinereus streatori Merriam, 1895