Endangered Species Status for Texas Hornshell; Final Listing Rule

We, the U.S. Fish and Wildlife Service (Service), determine endangered species status under the Endangered Species Act of 1973 (Act), as amended, for the Texas hornshell (Popenaias popeii), a freshwater mussel species from New Mexico, Texas, and Mexico. The effect of this regulation will be to add this species to the List of Endangered and Threatened Wildlife.