Option A
A. The chest and belly are significantly lighter than the dorsal colour.
B. The tail is distinctly bicoloured, with long white guard hairs running most of the length of the tail.
C. The upper third molar is generally 1 mm long and less than .5 mm wide.
Select

Option B
A. The tail is not distinctly bicoloured.
B. Any long guard hairs are not white and are not numerous on the last half of the tail.
C. The upper third molar is generally greater than 1 mm long and more than 0.5 mm wide.
Select