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A. Milne Edwards, 1869

Carapace much broader than long (CB/CL about 1.85); epibranchial crests interrupted medially, but in median part small crests are still extant; antero-lateral borders with 4 teeth, decreasing in size fore to aft. Basal antennal joint with a low granulate crest occupying its whole length. Cheliped merus granulate on posterior border, anterior border armed with 3 spines; carpus with 5 small and acute spines on external border; upper face of palm with 4 spines on anterior and 3 on posterior borders. Male first pleopod short, stout, gently curved, bearing distally on inner surface 2 rounded membranous lobes; subterminal armature on outer side a regular double row of elongate, closely spaced bristles merging into a distal clump of small to large bristles. (Türkay 1995)

Carapace very broad, 4 antero-lateral teeth; tips of chelipeds spoon-shaped; spines on hands of chelipeds extremely well developed. (Davie 1999)

Type locality: Madagascar.
Range: Red Sea; Madagascar - (A. Milne Edwards, 1869), Toliara (Crosnier, 1962); Japan - Okinawa-jima (Minei, 1971), Yoron-jima, Ishigaki-jima, and Taketomi-jima (Sakai, 1976a); South China Sea - Nansha Islands (Dai & Xu, 1991); Guam; Palau (Takeda & Shimazaki, 1974); Indonesia - Ambon (de Man, 1888d), Banda (Stephenson, 1972a), Kera near Timor, Timor and Obi (Stephenson, 1975); Australia - One Tree Island, Capricorn Group; Fiji - Suva (Stephenson, 1972a); Samoa; Johnston Island; Hawaiian Islands; Tuamotu Archipelago - Rangiroa (Stephenson, 1976); shallow waters.

Thalamitoides quadridens