258 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 112 



long and 9.5 mm. wide. The largest female is from Talladega County, 

 Alabama: 35.0 by 10.0 mm. 



The coloration is somewhat variable, the specimens from Kentucky 

 and Tennessee generally trimaculate with broad median spots. A 

 tendency for crossbanding increases southward, where the collum also 

 develops an anterior yellow border. In northern Alabama (e.g., Jack- 

 son County), the transition from trimaculate to banded patterns may 

 often be noted on a single specimen, the bands being on the anterior 

 half of the body and lunate spots being on the posterior half. Two 

 females from Cheatham County, Tennessee, seem to have been cross- 

 banded with chestnut in life; a male from directly south in Perry 

 County, Tennessee, is typically trimaculate with yellow. 



Alabama specimens likewise tend toward development of somewhat 

 more acute sternal spines, and in many males the 7th segment is pro- 

 vided with two small conical sternal lobes at the base of the 8th legs. 

 This occurrence can be traced as far north as Mountain View, Grundy 

 County, Tennessee. With the available material, this structural vari- 

 ation cannot be regarded other than as clinal, and even so is of a very 

 low order of magnitude. 



The solenomerite of the male gonopod becomes, on the average, 

 slightly more elongated from north to south, but without sufficient 

 constancy to indicate more than a gradual trend. All the variants 

 noted for the species proceed in a north to south direction, but there 

 seems to be no point where an abrupt change occurs in any of them. 



Distribution: Extreme southeastern Kentucky, west and south 

 through most of the Cumberland Plateau in Tennessee as far as the 

 Western Highland Rim, south through Alabama to the general 

 vicinity of Tuscaloosa; not yet known from the Coastal Plain of this 

 state. In Tennessee it occurs abundantly in the Cumberland Plateau 

 but apparently only west of the Sequatchie Valley, the form occur- 

 ring on Walden Ridge being C. g. georgiaria. Specimens have been 

 examined from the following localities (all collections in RLH and 

 by Leslie Hubricht unless otherwise stated): 



Kentucky: laurel county: 1 mile northwest of Baldrock, 1 d\ 2 ? , May 26, 

 1952. bell county: Kentucky Ridge State Forest near Pineville, 3 d\ June 22, 

 1950. Pine Mountain State Park, 1 d\ 2 ? , June 23, 1950, J. A. Fowler and R. 

 L. Hoffman, harlan county: Pine Mountain, 1 d\ June 1946, W. L. Necker, 

 CNHM. 



Tennessee: Campbell county: 1.5 miles southeast of Morley, 1 d\ April 30, 

 1954. fentress county: 5 miles north of Jamestown, June 28, 1957. scott 

 county: 1.7 miles northeast of Winfield, 1 d\ May 30, 1958. Just north of 

 Elgin, 1 d\ May 30, 1958. Cumberland county: Ozone Falls, 1 cf, 3?, May 

 9, 1951. warren county: 9 miles southeast of McMinnville, 1 d\ and 1 mile 

 northeast of Rock Island, 2 d\ 1 ? , May 9, 1951. dekalb county: 0.8 miles 

 southeast of Dowelltown, 1 ? , July 5, 1958. perry county: Near Campbell 

 Cave, 2.5 miles east of Linden, 1 d\ June 16, 1957. cheatham county: 1.5 



