White, 1847
The dorsum of the carapace is flattened, but in reality the gastric, cardiac and branchial regions are traceable more or less distinctly in some larger specimens. In the cheliped the merus is trigonal with the laminar upper and lower edges which end each in a sharp tooth, its distal margin being armed with three lobular teeth. Three laminar teeth on the upper surface of the carpus are disposed in a triangle and directed toward the different directions. The upper edge of the palm is distally produced into a high laminar tooth. In the ambulatory legs the upper border of the merus is armed with a triangular tooth in the middle and with a high narrow one at its distal end. The upper border of the carpus is also triangularly produced, while that of the propodus is raised and rather angulated in some specimens and only weakly convex in the others. The propodus is enlarged distally, and the talon-like dactylus articulating with the distal upper half of the propodus is held against its lower half in the manner of a subchela.
The carapace is ornamented with purplish brown longitudinal, rather parallel bands and alternating streaks, and the chelipeds and ambulatory legs with broad somewhat oblique cross-bands. Even if this colour pattern may be more or less simple and indistinct in the smaller specimens, it is characteristic of this species. (Suzuki K. & Takeda, 1974)
Type locality: Borneo.
Range: India - Travancore coast (Alcock, 1895a); Sri Lanka; Japan - Suruga Bay (Suzuki K. & Takeda, 1974), Shimoda, Kii Nagashima, Kii Minabe and Miyazaki (Sakai, 1976a), Kushimoto (Miyake, 1983), Kagoshima; China - Beibu Gulf (Shen et al., 1982), South China Sea (Dai & Yang, 1991); Gulf of Thailand; Borneo; Australia - Torres Strait (Haswell, 1880b); littoral to 10 m.