Dana, 1851
Rostral spines strongly divergent from base; preorbital spine strongly produced, directed obliquely forward or upward; postorbital lobe basally narrow; postorbital lobe not strongly produced, apex close to antorbital lobe, upper orbital hiatus subcircular; cardiac region inflated with a strong tubercle at summit; anterior pterygostomial spine robust, strongly curved forwards, smooth; posterior carapace margin smooth. (Davie 1996)
Type locality: Lahaina, Maui, Hawaiian Islands.
Range: Red Sea; Seychelles (Rathbun, 1911); Cargados Carajos (Rathbun, 1911); north-east Arabian Sea (Griffin, 1974); India - west of Bombay (Griffin, 1974); Sri Lanka (Alcock, 1895a); Maldives - Nallandu (Rathbun, 1902b); Chagos Archipelago (Rathbun, 1911); Arakan Coast (Alcock, 1895a); south-east Andaman Sea (Griffin, 1974); Japan - Ogasawara-shoto (Takeda, 1977a); Indonesia - Java Sea, Flores Sea, Borneo Bank and Timor (Griffin & Tranter, 1986a); Hawaiian Islands - Lahaina, Maui (Dana, 1852), Penguin Bank off Molokai (Griffin, 1974), Honolulu (Griffin & Tranter, 1986a); 18-97 m.