The taxonomy of two Pacific species of deep-water porter crabs of the genus Lamoha (Brachyura: Homolidae ), L. murotoensis (Sakai, 1979) and L. personata (Guinot and Richer De Forges, 1981), is treated , and variation in several characters are discussed. Specimens from the French Marquesas Islands are confirmed as L. murotoensis. and L. personata is recorded from Guam for the first time.