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(Desmarest, 1822)

Carapace with heavily granular surface, granules large and rounded; front deflexed, markedly constricted between bases of ocular peduncles, with small granules on margins, bilobed distally, median furrow deep; lateral margins posteriorly subparallel or slightly convergent, 3 large and 1 small antero-lateral teeth. Ocular peduncles long and narrow, cornea extending to base of external orbital angle. Central region of epistome straight. Merus of third maxilliped markedly smaller than ischium. Palm of male cheliped stout, outer face smooth, inner face heavily hairy in upper and distal portions, heavily granular in lower and proximal portions; immovable finger not deflexed, cutting edge without differentiated tooth, with rows of granules instead; cutting edge of dactylus proximally with a large, quadrangular, and crenulated tooth, and a few widely spaced cylindrical granules distally. Meri of ambulatory legs heavily granular and with variable hair. (Türkay 1995)

Type locality: East India.
Range: South Africa (Barnard, 1955); Mayotte Islands (Crosnier, 1965); Madagascar - Sakatia (Hoffmann, 1874, Tesch, 1915), Nosy Bé (Lenz & Richters, 1881), baie d'Ambaro and Sakatia (Crosnier, 1965); India - (Kemp, 1919), Bombay (Chhapgar, 1957), Gulf of Mannar (Laurie, 1906, Barnes, 1970); Malacca (Lucas, 1839); Japan - Kobe (Miers, 1886), Tokyo Bay and Kochi (Ortmann, 1894a), Tosa Bay (Sakai, 1939), Kobe (Barnes, 1970), Kii Nagashima, Tosa Bay, and Noto Peninsula (Sakai, 1976a); China - Guanghai, Guangdong (Tai & Song, 1984), Hong Kong (Stimpson, 1858b, 1907, Barnes, 1970); Philippines - (Adams & White, 1848, Miers, 1886, Laurie, 1906), Luzon (Ortmann, 1894a); Gulf of Thailand (Rathbun, 1910a); Malaysia (Tweedie, 1937); Singapore (Laurie, 1906, Barnes, 1970); Indonesia - Makassar (Rathbun, 1910b), Bay of Bima, Sumbawa (Tesch, 1918a); New Guinea - Kaimare and Daru Island (Barnes, 1967); Australia - Broome (Rathbun, 1924c), Fremantle and Broome, W. A. (Barnes, 1967), from Townsville to Bundaberg, Queensland (Barnes, 1967); New Caledonia (A. Milne Edwards, 1873); 10-20 m.

Latreille's sentinel crab (Macrophthalmus latreillei)