Supplementary material 3 from: Gladstone NS, Niemiller ML, Pieper EB, Dooley KE, McKinney ML (2019) Morphometrics and phylogeography of the cave-obligate land snail Helicodiscus barri (Gastropoda, Stylommatophora, Helicodiscidae). Subterranean Biology 30: 1-32. https://doi.org/10.3897/subtbiol.30.35321 - Gladstone, Nicholas S. (2019)