Miers, 1884
The carapace is more uneven than in Thacanophrys longispinus, and is covered with minute granules and curled hairs. The gastric region is armed with two knobbed spines in the median line, cardiac region with two side by side; intestinal region with two in the median line, of which the anterior one is very small; the branchial region has two spines at the same position as in T. longispinus.
The pseudorostral spines are acuminate, less markedly divergent and somewhat deflexed; the median sinus is V-shaped but outer borders of the spines are subparallel. The supraocular eaves are laterally produced to form a tubular orbit, they are armed with two anterior and one posterior spines. Hepatic region has three lateral and two or three ventral tubercles. Basal segment of antenna very broad and its outer border expanded, with two terminal spines, one ventral and the other lateral, and with one proximal tooth as in T. longispinus.
Chelipeds are thickly granulated but each segment is not at all cristate, arm with six or seven tubercles on the upper border and five or six tubercles on the inferior border; wrist with a tubercle on the upper surface near the base; fingers gape at base, the movable finger having a strong tooth not far from the base. Ambulatory legs are thickly covered with curled hairs, merus having a terminal spine on the anterior border. (Sakai, 1938: 309)
Type locality: Providence Islands, Seychelles.
Range: Red Sea - Jebel Attair, Eritrea (Griffin & Tranter, 1974); Mozambique Channel (Griffin, 1974); Seychelles - Providence Island (Miers, 1884b), Seychelles (Rathbun, 1911); Saya de Malha Bank (Rathbun, 1911); Maldives; Sri Lanka (Alcock, 1895a); Andaman Sea (Alcock, 1895a); Japan - between Ito and Hatsushima and Manazuru-saki (Sakai, 1935), Sagami Bay (Sakai, 1938a, 1965), Tsushima Strait (Takeda, 1973c), Sagami Bay, Kii Minabe and Tosa Bay (Sakai, 1976a), Mage-jima, Kagoshima Prefecture (Takeda, 1977b); Korea - Cheju-do (Kim, 1973, Kim & Chang, 1985); East China Sea (Takeda & Miyake, 1969e); Western Australia - west of Shoal Point (Griffin & Tranter, 1986a); 60-150 m.