| When he walked, he walked as though he went down a declivity. |
| Beetles are 3-4 mm in length, dark-brown, with four spines at each side of the elytral declivity. |
| Correction of declivity is possible and common, yet it requires more efforts. |
| In so doing, they have shorten the length of their course, increased their erosive power through higher declivity and rapidity of flow. |
| The elytral declivity has four spines at each side, the third is largest and distinctly capitate. |
| Increase in the declivity or the volume of a stream increases its velocity and therefore its transportive power. |
