This took place in the bitterroot Mountains in Idaho, in 1902.
I have examined a number of mice from the bitterroot Valley in western Montana and the color value for 12 adults is 2.7.
bitterroot was dug on prairie hills, wild potatoes were found in the foothills, and the wild onion grew in the valley floors.
The average of all the specimens from the bitterroot Valley is a little nearer oribasus.