MILLIPED GENUS CHEROKIA — HOFFMAN 253 



end of the Cowee Range, in the vicinity of Highlands, North Carolina, 

 and at several localities in the Chatooga River drainage shared Irv the 

 two Carolinas and Georgia. 



At two places, Chatooga Ridge north of Mountain Rest, South 

 Carolina, and Cool Springs, northeast of Toccoa, Georgia, specimens 

 of the red-banded phase occur with fairly typical georgiana. At the 

 latter locality, in addition to these, 1 found a male specimen with broad 

 lemon yellow crossbands, all of which suggests considerable genetic 

 instability at least as far as color is concerned. 



The second of the color variants occurs in the vicinity of Highlands, 

 North Carolina. The median spots of many specimens of the normal 

 trimaculate form tend to be quite wide, especially in females, and oc- 

 casionally may touch those of the paranotal series. Occasional speci- 

 mens will show a neat narrow yellow band on each tergite. In going 

 northwest along the Cowee Mountains the red-banded form drops out 

 at Walnut Creek Gap, 8 miles north of Highlands. Only 7 miles 

 farther, at Cullowhee Gap, I found no specimens so marked. The 

 extreme end of the Cowee Range, however, is taken over by a very 

 attractive color form occuring in and around Cowee Bald, north of 

 Franklin, North Carolina, as shown on the map (fig. 6) by the diagonal 

 shading. In this form the tergites have a straight transverse yellow 

 bar, which does not widen anteriorly on the paranota, nor middorsalh' 

 except in a few females. As this phase seems to occur to the exclusion 

 of all others at the isolated end of the Cowees (perhaps isolated by a 

 rather low gap northeast of Franklin), this phase might form the sub- 

 ject of future work on genetics in xystodesmids, work I hope will soon 

 be undertaken. 



From the occasional capture of similar individuals in the very 

 heterogeneous population around Highlands, one might postulate 

 that the gene for this color pattern has been carried along the Cowees 

 by a branch of what I think must have been a general northward 

 migration of georgiana into the mountains. 



As can be appreciated from a glance at the map, the Highlands 

 region is one of great importance in the distribution of color patterns 

 in C. georgiana. This region shares one color phase with lowland 

 C. g. georgiana, has the normal trimaculate pattern, is located adjacent 

 to the area where the median spots are being suppressed, and, possibly, 

 is the point of origin of a distinctive 3 T ellow-banded form. Further 

 than this statement I cannot go, and commend investigation to some- 

 one with the time and knowledge to perform controlled studies on 

 pattern inheritance with the Highlands population. 



Concerning one other key character stipulated for ducilla — the com- 

 plete absence of the tibiotarsal marginal spur — there is less to say. In 



