Confidence: I'm as sure as I can be.
Notes: The details needed for a certain ID can't be seen on the image. However the speciemen is unlikely to be E.aspera which has a rostrum with two well separated, wide based, horns and much shorter legs. This specimen is more probably either Inachus or Macropodia. To be sure you would need closer examination of the distribution of the rostrum, spines on the carapace and the spines around the eye. Finally its always worthwhile to look at the legs, particularly the last joint.