Spring sites in Texas. Type locality of Vitropyrgus lillianae gen. et sp. nov. Comal Springs Upwelling #7, New Braunfels, Comal County A at normal water flow conditions, photo by Marcus Gary B at low water flow conditions, photo by Randy Gibson C drift nets in water flow at Fessenden Springs, Kerr County, photo by K.E. Perez D type locality of Phreatodrobia bulla sp. nov. Hidden Springs, Bell County, photo by P. Diaz E Robertson spring run hyporheic sampling site, Bell County, photo by K.E. Perez.