PLATE 13. 



Fig. 1. — Cambams valid us Faxon, c?, form I. Type. Huntsville, .\la. M. C. Z., No. 301. X U. 

 Fig. 2. — Cambarus bartonii veteranus Faxon, cf, form I. Type. Indian Creek, Baileysville, \V. Va. 

 Aug. 16, 1900. U. S. N. M., No. 25,020. Reduced. 



