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(A. Milne Edwards, 1869)

Carapace smooth to naked eye, microscopically granular upon magnification; epibranchial ridges distinct, mesogastrics obscure, cervical grooves conspicuous; front typically bilobed, median notch usually distinct, rarely obscured; 4 very sharp and forwardly directed antero-lateral teeth, decreasing in size fore to aft, fourth sometimes rudimentary. Chelipeds with long hairs on upper and outer faces; merus with 3 teeth and 2 tubercles on anterior border, lower border smooth; carpus with internal spine, otherwise smooth; palm with 2 longitudinal carinae on upper surface. Fifth pair of legs curved back dorsally over the carapace; dactyl slightly shorter than propodus (0.93 times). (Türkay 1995)

Fifth pair of legs turned back dorsally over carapace; front extended and smoothly rounded except for a small median notch, composed of rounded lobes or sinuous (effectively bilobed); carapace not circular in outline and not markedly convex; 4 antero-lateral teeth. (Davie 1999)

Type locality: New Caledonia.
Range: Madagascar - Nosy Bé (Crosnier, 1962); Seychelles - Praslin (Rathbun, 1911); Mauritius (Doflein, 1904); Japan - Hachijo-jima (Sakai, 1954, 1976); Taiwan - Wanlitung (Huang & Yu, 1997); China - Paracel Islands (Yang S. et al., 1979, Chen H., 1980b, Dai & Yang, 1991); Mariana Islands; Australia - Murry I., North West I., Heron I. and Elizabeth Reef (Stephenson & Campbell, 1960); New Caledonia (A. Milne Edwards, 1869); Fiji; Samoa; 5-20 m.

Turtle-weed crab (Caphyra rotundifrons)