John Bachman's (1837) shrews: from top to bottom, Sorex richardsonii Bachman, 1837 (=Sorex arcticus Kerr, 1792); Sorex forsteri Richardson, 1828 (=Sorex cinereus Kerr, 1792); Sorex cooperi Bachman, 1837 (=Sorex cinereus Kerr, 1792); Sorex fimbripes Bachman, 1837. Image from Bachman (1837: pl. 24)
Date 1837
Source https://www.researchgate.net/figure/John-Bachmans-1837-shrews-from-top-to-bottom-Sorex-richardsonii-Bachman-1837_fig1_329198128
Author John Bachman
Source: https://commons.wikimedia.org/wiki/File:John-Bachmans-1837-shrews-from-top-to-bottom-Sorex-richardsonii-Bachman-1837.jpg

5. Sorex richardsonii = Arctic shrew (Sorex arcticus)
The Arctic shrew (Sorex arcticus), also known as the blackback shrew or saddlebacked shrew, is a medium-sized shrew found in Canada and the northern United States. The Arctic shrew is most distinctive in its tricolored fur. It is dark brown or black on its back from its head to the base of its tail, while its flanks are a lighter brown, and its underside is lighter still grayish brown. Order: Eulipotyphla > Family: Soricidae > Genus: Sorex > Species: Sorex arcticus


6. Sorex forsteri = masked shrew (Sorex cinereus)
7. Sorex cooperi = masked shrew (Sorex cinereus)
The cinereus shrew or masked shrew (Sorex cinereus) is a small shrew found in Alaska, Canada, and the northern United States. This is the most widely distributed shrew in North America, where it is also known as the common shrew. Order: Eulipotyphla > Family: Soricidae > Genus: Sorex > Species: Sorex cinereus


8. Sorex fimbripes = fringe-footed shrew ? (status unknown)