Intergradation with _washingtoni_ is shown by specimens from the northern part of the Cascade Range in Chelan and Okanogan counties, Washington. The adult male, U. S. Nat. Mus., no. 235183, from Bald Mountain, is referable to _washingtoni_ on the basis of cranial characters but all the other adult and subadult specimens examined from Chelan and Okanogan counties are nearer _nevadensis_ on the basis of cranial characters. Indeed, some show no approach to _washingtoni_ in cranial characters. As might be expected on geographic grounds, the specimen from Easton, U. S. Nat. Mus., male subadult, no. 116870, shows approach to _washingtoni_. This is true of the coloration of the hind limbs, small size of the tympanic bullae, and relatively greater length of the preorbital part of the skull. However, the greater width of the light color of the underparts and relatively great breadth across the mastoid processes and zygomatic arches are points of agreement with _nevadensis_. Similarly, a series of 7 specimens from the Entait River, 20 miles above its mouth, in tone of color is nearer to _washingtoni_, as is one of the two skulls of adult males in length of the preorbital region. However, in greater breadth of the skull otherwise, and in the relatively great width of the light color of the underparts, the animals are nearer to _nevadensis_, to which they are here referred. Some of these characters mentioned above in which departure is shown from typical _nevadensis_ are characters that show approach to _altifrontalis_. This is especially true of the more intense coloration and restriction of the color of the underparts. Complete intergradation with _effera_ is shown by specimens from southern Oregon. The change from small _effera_ to the larger _nevadensis_ here is gradual; consequently in northeastern California and southern Oregon the size increases gradually to the northward. Specimens showing complete intergradation with _oregonensis_ and _saturata_ are wanting. However, one specimen from Crescent Lake suggests _oregonensis_ in having near (18) apricot yellow underparts such as occur frequently in _oregonensis_. Also some specimens from northern California approach _saturata_ in having the color of the underparts reduced in the extent to which it reaches out on the under side of the tail. This fact and the consideration that the two races are less different from one another than are other kinds which definitely are known to intergrade leave no doubt but that material from the intervening localities would show complete intergradation.