Ihle, 1918
The general surface of the body and appendages of this species is covered with mushroom-like granules and also sharp granules. The carapace is orbicular and its regions indistinct, the intestinal region alone is convex and circumferenced by grooves, while the cardiac region is laterally marked by a groove.
There are numerous spines, which are covered with mushroom-like granules, on and around the margins of the carapace. The front is less produced and is divided into two obtuse lobes which are also covered with granules. It is apparently a small species, measurements given by the original author being 9 4/1 long and 9 mm wide.
No specimen of this species is comprised in our collections. (Sakai, 1937)
Type locality: between Timor and Roti, Indonesia, 10°27.9'S, 123°28.7'E, "Siboga" stn 302, 216 m.
Range: Japan - west of Shiono-misaki and north-west of Muroto-misaki (Yokoya, 1933), Sagami Bay (Sakai, 1965b), Sagami Bay, Mikawa Bay, Kii Peninsula and Tosa Bay (Sakai, 1976a); South China Sea (Serène & Lohavanijaya, 1973); Philippines - north of Lubang and south of Manila Bay (Serène & Vadon, 1981, Chen H., 1989); Indonesia - between Timor & Roti (Ihle, 1918); 65-216 m.