Upper lateral line scales 16 (7), lower lateral line scales 7(1), 9 (3); both upper and lower lateral line including 1-4 pored scales terminally or subterminally
at open ends.
The maxilla is moderate (1.5 in HL.) and pointed posteriorly with a concave subterminal margin dorsally, a convex subterminal margin ventrally; supramaxilla large and subterminally positioned.
Upper jaw sexually dimorphic: upper jaw length of 27 adult males (66.2-94.2 mm) 30.0-34.3% SL, 19 adult females (61.2-92.4 mm) 23.1-27.8% SL; end of maxilla expanded and subterminally rounded, becoming elongate and scimitar-shaped in males, nearly reaching opercular margin; supramaxilla narrow and positioned about midmaxilla.
Appearance: Slender, length to 12.0 mm, rounded posteriorly and somewhat pointed subterminally
at anterior end (Figs.
12 ridge-like denticles, one where basal portion of lip joins columella frequently larger, with a shallow notch separating it from columella tooth; an additional small granule is usually present just external to this notch; exterior of outer lip thickened subterminally
but not distinctly varixed; interior nacreous, deeper region lacking in-running ridges, but cords of outer surface showing through.
Peristome oblique and nearly tangential, aperture subcircular; columella shallowly concave with a rounded tooth at its base; interior of outer lip of mature individuals subterminally
thickened and set with approx.