Family Epialtidae Macleay, 1838

Remarks. Lee et al. (2019) reported on a large collection of epialtid crabs from Papua New Guinea and adjacent areas. The present study found further specimens of the following species previously reported from Papua New Guinea: Crocydocinus ewok Lee, Richer de Forges & Ng, 2019; Samadinia ahyongi (McLay, 2009); S. boucheti (Richer de Forges & Ng, 2013) and Tunepugettia corbariae Lee, Richer de Forges & Ng, 2019 . In this paper, we only treat a few species. The taxonomy of Griffinia lappacea (Rathbun, 1918), which had earlier been misidentified as G. takedai Richer de Forges & Ng 2012, is reappraised and new characters used to separate these two allied species. Variation in G. lappacea is also discussed. Griffinia gilloloensis (Rathbun, 1916) and Oxypleurodon luzonicum (Rathbun, 1916) are also recorded from Papua New Guinea. Specimens of Hyastenus ? borradailei (Rathbun, 1907) are now reported from Papua New Guinea for the first time and aspects of its taxonomy discussed.