Measurements. Total length, 208 ; tail vertebrae, 128 ; hind 

 foot, 30.5. 



396. princeps. {Zapi/s), Allen, Bull. Am. Mus. Nat. Hist., 1893, 



p. 71. 



Type locality. Florida, LaPlata County, Colorado. 



Geogr. Distr. Rocky Mountain region from New Mexico north 

 to Henry House, Alberta. 



Genl. Char. Large; skull broad and large. 



Color. Summer Pelage. Above yellowish brown mixed with 

 black, sides j'ellowish brown sparsely mixed with blackish; lateral 

 stripe clear yellowish brown; hind feet grayish white; tail pale brown 

 above, grayish white beneath. 



Fall Pelage. Dorsal area blacker; sides yellower. 



Measurements. Total length, 245 ; tail vertebrae, 147 ; hind 

 foot, 32. 



a .—minor. {Zapus), Preble, N. Am. Faun., No. 15, 1899, p. 23. 



Type locality. Wingard, near Carlton House, Saskatchewan. 



Geogr. Distr. Saskatchewan Plains; range unknown. 



Genl. Char. Similar to Z. princeps, hut smaller, darker; rostrum 

 more deflected, nasals narrow anteriorly; brain case higher; inter- 

 pterygoid fossa shallower. 



Measurements. Total length, 219; tail vertebrae, 131 ; hind 

 foot, 29.9. 



b. — ore^onus. (Zapus), Preble, N. Am. Faun., 1899, No. 15, p. 24. 



Type locality. Elgin, Blue Mountains, Oregon. 



Geogr. Distr. Blue Mountains, Oregon. 



Genl. Char. Similar to Z. princeps. 



Color. ^' Early Summer Pelage. Very similar to Z. //■;>;<;v/.f, but 

 slightly lighter on sides, especially anteriorly; dorsal area and head 

 more finely flecked with color of sides, the head especially presenting 

 a grayish appearance; beneath pure white; whitish edging of ears 

 very indistinct." (Preble, 1. c.) 



Measurements . Total length, 250; tail vertebrae, 154; hind 

 foot, 33. 



397. major. {Zapus), Preble, N. Am. Faun., 1899, No. 15, p. 24. 

 Type locality. Warner Mountains, Oregon. 



Geogr. Distr. Type locality only. 



Genl. Char. Similar to but larger than Z. princeps. 



Color. Summer Pelage. Above ochraceous buff lined with black, 

 heaviest on dorsal area; sides same color with less black; tail not 

 sharply bicolor; lower parts and feet whitish. 



