The Limestone Salamander (Hydromantes brunus) is a lungless salamander, found in a portion of the Merced River Canyon in Mariposa County, California. While Hydromantes is composed of three species found in the United States; H. platycephalus and H. shastae, and Hydromantes is endemic to parts of California, southern France and Italy, the H. brunus is rare and specific to Merced Canyon. This member of the plethodontidae family breathes through its skin and manifests a flattened body...