| Lower Lip Surface | Entirely and deeply plicate; few in number; relatively smooth-surfaced, plicae ridges and grooves distinctly wider than upper lip ridges; ridges much angled from midlongitudinal axis |
|---|---|
| Lower Lip Corner | Abrupt thinning to junction with upper lip; unnotched posterolaterally |
| Shape of Rear Edge of Lower Lip | Posterior margin moderately angled; lower lip indented in an inverted U-shape |