1. The venter has a median ridge aligned with diagonally elongated nodes. 2. The dermal denticles are widely spaced, with three points and a median ridge . 3. The dermal denticles are small and overlapping, each bearing a median ridge and three marginal teeth. 4. The body is densely covered by small, overlapping arrowhead-shaped dermal denticles with a median ridge . 5. The dermal denticles are small and overlapping, each with three-toothed crown that bears a median ridge . 6. The body is densely covered by minute dermal denticles, each shaped like an arrowhead and bearing a median ridge . 7. The dermal denticles are small and overlapping, each with a median ridge and three marginal teeth on the crown. 8. The cross section may be faintly hexagonal from the effect of a median ridge on either flank, otherwise is tetragonal. 9. The small dermal denticles have sharp wedge-shaped crowns bearing median ridges , and are placed on stalks ( pedicels ). 10. The skin is covered by dermal denticles, each with a leaf-shaped crown bearing a median ridge and three marginal teeth.
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