The U.S. Fish and Wildlife Service has announced a proposal to add two garter snakes found in the U.S. southwest to the federal endangered species list: the Mexican Garter Snake (Thamnophis eques) and the Narrow-headed Garter Snake (Thamnophis rufipunctatus). Both would be listed as Threatened. The FWS is accepting comments on the proposed listing through September 9. AP wire story, press release.