Yet there is a rather marked tendency of _radix_ to approach the characters of _marciana_ in southwestern Kansas. Two specimens (one from Morton County, one from Gray County) have the dorsal stripe slightly broken up by infiltration of the ground color onto the edges of the scales. All southwestern _radix_ develop the distinct postrictal crescent so characteristic of _marciana_, and occasional specimens fail to have light centers in the last two labials. Finally, one specimen from Meade, Meade County (No. 5434), appears to be actually intermediate, and may be regarded as a hybrid. The middorsal stripe is not sharp-edged; the lips are barred exactly as in _marciana_, the postrictal crescent is well defined, and the lateral light stripe extends onto the fourth scale row only very slightly. I refer the specimen to _T. radix_ on the basis of the middorsal light stripe which still is not as irregular as in _marciana_, upon the nature of the lateral dark spots (not fused), and upon the slight extension of the lateral light stripe onto the fourth scale row. Yet the specimen is definitely atypical of _radix_; no other of the 135 specimens examined deviates so strongly from the normal condition. Because the two kinds of garter snakes in question maintain their distinctness at other places where they occur on common ground, it seems best to interpret specimen No. 5434 as a hybrid rather than an intergrade. 21-2763