Representatives of Galba humilis. Galba humilis from North America H = shell height: 1- Tioga, New York, H = 12.6 mm; 2- Emmet, Michigan, H = 11.0 mm; 3- Beaver Dam, New Mexico, H = 10.3 mm; 4- Campus Lake, Louisiana, H = 10.1 mm; 5- Bizard Island, Montreal, Canada, H = 9.7 mm; 6- Augusta, Virginia, H = 9.7 mm; 7- Philadelphia, Pennsylvania, H = 7.5 mm; 8- Mulberry Grove Pond, Utah, H = 9.6 mm; 9- Mulberry Gove Pond, Utah, H = 5.8 mm; 10- Anderson, Tennessee, H = 6.9 mm; 11- San Antonio, Texas, H = 6.0 mm; 12- Randolph, North Carolina, H = 5.9 mm; 13- Hamilton, Ohio, H = 5.8 mm; 14- Kershaw, South Carolina, H = 5.6 mm.