Dynomenidae and Dromiidae (Decapoda, Brachyura) from Guam, Philippine Islands, Tonga and Samoa Author Mclay, Colin L. Zoology Department, Canterbury University, Christchurch, PB 4800 (New Zealand) c. mclay @ zool. canterbury. ac. nz. text Zoosystema 2001 23 4 807 856 journal article 6377 10.5281/zenodo.4689208 72669070-3bd6-41be-bd47-f386c83d0927 1638-9387 4689208 Genus Lauridromia McLay, 1993 DIAGNOSIS. — Carapace as wide or slightly wider than long. Coxae of third maxillipeds closely approximated and inserted under tip of sternum. Female sternal sutures 7/8 end apart on well-developed tubes behind base of chelipeds. Cheliped with an epipod, superior margin of carpus and propodus armed with two to four large tubercles. Legs not knobbed or ridged. Propodi and dactyli of first two pairs of legs equal in length, inner margin of dactyli typically armed with seven or more small spines. Dactyl of third leg opposed by a single propodal spine, usually two spines on the outer propodal margin. Fourth leg shorter than second, dactyl usually opposed by two propodal spines with up to three spines on the outer margin and usually a spine on the outer margin of the dactyl itself. Uropods well-developed, visible externally, but not used in the locking mechanism. This consists of serrated flange on the base of first and second legs, sometimes on cheliped base, which fit against lateral margins of abdomen. Joint between the last two abdominal segments wholly or at least partially fused. First male gonopod stout semi-rolled tube, tip sharp densely setose, second gonopod simple, needle-like no exopod on basis (after McLay 1993 ).