Ozius truncatus
Crab, Black Finger
Invertebrate
Arthropoda
Malacostraca
Oziidae
It has a flat carapace and the chelipeds (claws) have black tips.
Found in the lower tidal zone, on gravel, rocky and stony beaches, in Northern NZ.
They are scavengers feeding on dead animals and plants.
A Guide to the Brachyrhynchous Crabs; L. R. Richardson,