ANNELID GENUS CAMBARINCOLA — HOFFMAN 335 



characters. The male reproductive system agrees in both size and 

 proportions among specimens from the northern and southern extremi- 

 ties of the known range. Sexually mature animals range in length 

 (preserved) from 4.0 to 6.5 mm., indicating considerable continuation 

 of growth following maturity. 



Affinities. — -Insofar as genital characters are concerned, this 

 species is obviously closest to members of the Philadelphica group. 

 It shares part of its range with both C. philadelphica and C. fallax, 

 resembling the former in jaw characters and the latter in the develop- 

 ment of peristomial tentacles. Probably it is phylogenetically closest, 

 among living species, to C. philadelphica, and a study of the isolating 

 mechanisms operating where these two occur together would be a 

 matter of some interest. 



Distribution.- — -The southern Appalachians, from western North 

 Carolina to extreme southeastern West Virginia, in the Blue Ridge 

 and Valley and Ridge physiographic provinces. Specimens have 

 been examined from the following localities: 



North Carolina: ashe county: Buffalo Creek near Jefferson, June 14, 1950, 

 Horton H. Hobbs and C. W. Hart (PCH 343). macon county: Small tributary 

 to Leatherman Creek, about 8 miles northwest of Franklin, July 18, 1958, R. L. 

 Hoffman (PCH 881). watauga county: Winkler's Creek at Boone, June 21, 

 1948, Mike Wright (PCH 132); Valle Crueis, June 14, 1950, Hobbs and Hart 

 (PCH 350). 



Tennessee: carter county: Catbird Creek, Shenandoah Heights Park, 

 Johnson City, January 3, 1954, Holt (PCH 579). johnson county: Tenn. Hy. 

 91, 10.7 miles southwest of Damascus, May 27, 1951, Holt (PCH 589). unicoi 

 county: Sam's Creek, 3 miles south of Flagpond, July 7, 1951, Holt (PCH 452); 

 Jones Branch, July 2, 1955, Holt (PCH 583). 



Virginia: carroll county: U.S. Hy. 221, 3.1 miles .south of Woodlawn, 

 June 13, 1950, Hobbs and Hart (PCH 328). floyd county: U.S. Hy. 221, 7.9 

 miles south of Floyd, June 13, 1950, Hobbs and Hart (PCH 325); Hy. 221, south 

 of Willis, June 13, 1950, Hobbs and Hart (PCH 326). giles county: Sinking 

 Creek, 1 mile west of Newport, July 1947, Hobbs and others (PCH 234), July 3, 

 1950, Holt, Tuten, Kizer (PCH 407), June 27, 1953, B. L. Johns (PCH 499); 

 Cascades of Little Stony Creek, July 1947, Hobbs (PCH 243), June 25, 1952 

 (PCH 492); Big Stony Creek, August 14, 1950, W. R. Whitehurst (PCH 411). 

 GRAYSON county: Comer's Rock Recreation Area, July 16, 1949, Holt (PCH 

 257); pasture stream northeast of Buck Mountain, July 17, 1949, Holt (PCH 

 259); stream northeast of High Rock on Buck Mountain, July 17, 1949, Holt 

 (PCH 261); tributary to Big Wilson Creek about 4 miles south of Mouth of 

 Wilson on Va. Hy. 16, June 14, 1950, Hobbs and Hart (PCH 339). Patrick 

 county: Rock Castle Creek, west of Woolwine on Va. Hy. 8, July 5, 1947, Hobbs 

 and Wilson (PCH 290). Washington county: Tributary to Middle Fork of 

 Holston River, 10.6 miles northeast of Abingdon on U.S. Hy. 11, April 14, 1951, 

 Hobbs and West (PCH 436). avythe county: Wjtheville, no date given, 

 M. M. IVIcDonald (USNM 17698); Reed Creek, 3.3 miles southwest of Wytheville 

 on U.S. Hy. 11, April 14, 1951, Hobbs and West (PCH 439). 



West Virginia: Greenbrier county: Dry Creek near White Sulphur Springs, 

 July 3, 1947, Hobbs (PCH 294). mercer county: East River, 5.3 miles south- 

 653S71— 63 5 



