Carapace longer than wide; dorsally with transverse striae or tubercles. Rostrum well-developed, broad, flattened, usually subtriangular; supraocular spines present or absent. Sternal plate of thoracic somite 8 distinct, separated from preceding sternal plastron. Eyes with well-developed cornea. Antennal peduncle directed anteriorly or anterolaterally. Mxp1 exopod flagellum well-developed. Mxp3 pediform, ischium and merus elongate, not expanded mesially; epipod present. Chelipeds subcylindrical to ovate in cross-section.
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