Procambarus (Girardiella) steigmani, a crayfish which appears to be a habitual (primary) burrower, is described from a single locality on the Parkhill Prairie, in the Trinity River watershed of Collin County, Texas. Its closest relative, from which it differs in possessing asymmetrical first pleopods in the male and a highly sculptured annulus ventralis in the female, is P. (G.) regalis which has been reported from the Ouachita and Red river basins of southwestern Arkansas