line of severe thunderstorms, mostly in the summer months and by cold fronts in fall. Snow rarely falls south of San Antonio or on the coast except in rare circumstances. Of note is the 2004 Christmas Eve snowstorm, when 6 inches (150 mm) of snow fell as far south as McAllen. Wildlife Reptiles Mammals Sealife Arthropods Birds Demographics and culture Multicultural influences South Texas is well known for strong Hispanic, primarily Mexican American and Tejano (the Spanish term for "Texan") influences, due to its proximity to Mexico. Tejanos and Mexicans living in South Texas are descended from the Spanish and Sephardic Jewish settlers of Mexico, from Mexican indigenous groups allied with the Spanish, such as Tlaxcaltec and Otomi peoples, and from local indigenous groups of South Texas who were missionized by the Spanish, particularly Coahuiltecans. These migrations occurred and have been ongoing since the early 1700s in South Texas. The Treaty of Guadalupe Hidalgo in the 1840s failed to secure land belonging to the Mexican settlers. The disputed area was between the Nueces River south of San Antonio and Corpus Christi, the King Ranch, and the Rio Grande. Recognized by neither Mexico nor the United States, the Republic of the Rio Grande was established in this region in 1840, lasting less than a year. Laredo served as its capital. The Rio Grande Valley area played a significant role in the Mexican War of Independence, the Texas Revolution, the Mexican–American War, and the American Civil War, with many historical battle sites around the area. General Robert E. Lee resided at Fort Ringold (Rio Grande City) during this time as a colonel. President Zachary Taylor was General of the Army at Fort Brown (Brownsville) during the Mexican–American War. The Texas Rangers gained popularity for their actions in South Texas during the Mexican bandit raids in the late 19th and early 20th centuries. On May 25, 1876, a band of 40 Texas Rangers rode out of Laredo and headed north to the Nueces Strip. Their mission was to find, kill or capture John King Fisher, leader of a band of cattle rustlers and cut-throats who had been terrorizing the area. The Rangers were members of a select group known as the Special Force. Led by Leander McNelly, the Special Force was given the task to bring law and order to an area of South Texas that lay between Corpus Christi and the Mexican