Breadth of base zygomatic process of squamosal.—Greatest distance across base of zygomatic process of squamosal taken parallel to long axis of skull. m to m´
Figs. 1-3. Three views of the skull to show points between which measurements of the skull were taken. Based on Z. t. montanus, adult, female, No. 22165 KU, Cascade Divide, 6400 ft., Crater Lake Nat'l Park, Klamath County, Oregon. × 4.
The baculum has a characteristic size and shape according to the species, and the following significant measurements of the structure were taken:
Greatest length.—From posteriormost border of base to anteriormost point on tip.
Greatest breadth at base.—Greatest distance across base taken parallel to long axis of bone.
Greatest breadth at tip.—Greatest distance across tip taken parallel to long axis of bone.
In the descriptions of color the capitalized color terms refer to those in Ridgway (1912). Any color term that does not have the initial letter capitalized does not refer to any one standard.