The Devil Clam, Tridacna mbalavuana Ladd 1934, previously known as T. tevoroa Lucas, Ledua, Braley 1990, was described on the barrier reefs of Tonga and the Lau islands of Fiji. Here, we report two individuals found on the northeastern barrier reef of New Caledonia. While its known geographic range has expanded, its rarity and hence vulnerability persists.