FIGURE 9 in Two new species of Pyrgulopsis Call & Pilsbry, 1886 (Mollusca: Caenogastropoda: Hydrobiidae) from springs in the Rio Grande watershed in Texas

FIGURE 9. Scanning electron micrographs of shells (A–B), protoconch (C–D), and opercula (E = outer side; F = inner side) of Pyrgulopsis rubra sp. nov. Scale bars A–B = 500 µm; C = 100 µm; D = 50 µm; E–F = 200 µm.