northward, into the range of _noveboracensis_ as is the case with the change in intensity of yellowness of the underparts. Two males, in the United States National Museum, Biological Surveys Collection, from near Leighton, Alabama, no. 178386 from the Tennessee River nine miles north [of Leighton?] and no. 180240 from La Grange Mountain, although clearly referable to _olivacea_ on the basis of cranial characters, show some approach to _noveboracensis_ in lesser size of the skull and agree with _noveboracensis_ in the narrowness of the color of the underparts. Also, these specimens, like others from the northern part of the range of _olivacea_, for instance, no 31.227, Charleston Museum, from Mayesville, South Carolina, have the color of the underparts extended only part way out on the hind limb toward the foot. In specimens of _olivacea_ from the southern part of its range the color of the underparts is extended onto the hind feet and this trend reaches its extreme in _peninsulae_, specimens of which have the feet and larger parts of the limbs marked with the light color of the underparts. An adult female, no. 32.32, Charleston Museum, although typical of _olivacea_ in most respects, is nevertheless an intergrade. The teeth are as small as in some specimens of _noveboracensis_. The size of the skull is only slightly nearer that of _olivacea_ than it is to that of _noveboracensis_. The proportions of the skull, however, are distinctly those of _olivacea_. Five other specimens, from northwestern Alabama, namely two from eight miles north of Nauvoo, two from Shoal Creek, and one from White Creek, also show intergradation between _noveboracensis_ and _olivacea_. The remarks concerning color and color pattern of the specimens from Leighton apply equally well to the five from northwestern Alabama. In cranial characters, no. 51658 from Shoal Creek is referable to _olivacea_, as also is no. 51677 from the same place, providing it is a female rather than a male as sexed by the collector. No. 57146 from White Creek also is referable to _olivacea_ although the skull shows some approach to that of _noveboracensis_. Of the two males from near Nauvoo, no. 51652 is to me indistinguishable from _noveboracensis_, but no. 51653 does have some characters of _olivacea_, although on the whole, the latter, too, seems to be a little nearer _noveboracensis_ than _olivacea_. However, because the mean of these seven specimens from northwestern Alabama is nearer _olivacea_ than _noveboracensis_ the former name may be applied.