(Haswell, 1880)
The carapace is thickly covered for its most part with depressed vesicular granules of rather irregular shape; on the anterior median part in front of the protogastric regions is somewhat depressed, devoid of granules and clothed with shaggy hairs. The front is prominent and rather narrow, ending in two broad, arcuate and thin-edged lobes separated by a median deep V-shaped notch; the lateral borders with forwards-directing granules are almost parallel to each other; its dorsal longitudinal furrow posteriorly separating the protogastric region is very deep; each protogastric region with a tuft of shaggy hairs at its anterior median part is convex, being surrounded by a groove anteriorly and laterally; the furrows between the protogastric and mesogastric regions are shallow, but distinct. The lateral angle of the carapace is strongly produced into a strong tubercular tooth that is directed outwards and only slightly upwards; the anterior part of its dorsal surface is rather obliquely flattened with thick minute granules, while the posterior part is fairly convex with large granules; the inner end of the dorsal surface of the lateral tooth just reaches the corner of the mesogastric region. The surface between the mesogastric and cardiac regions is wide and markedly sunken with a pair of the submedian longitudinal, deep slit-like furrows. The cardiac region is indicated by a prominent transverse ridge followed medially by a small intestinal region.
Unfortunately, in the present male only the left cheliped which may be the larger is present, being roughened by conical or rather depressed granules. The anterior border of the ischium is produced into a broad rounded lobe. In the anterior border of the merus a high but truncated lobe is present just near its proximal end; the inner end of the lobe is placed about at the proximal one third of the anterior border of the merus; in the upper border the proximal one third or slightly more is thickly crested with two or three indistinct depressions; the distal end of the crest is produced into a prominent lobe that is slightly smaller than that of the ischium. The inner angle of the carpus is armed with a strong tubercle that is almost straight and fairly long. The palm is markedly roughened by large granules interspaced with sparse, longish brush-like hairs, widening distally; in the upper border there is a conical tooth in the middle, and the distal end just near the articulation with the movable finger is produced into a fairly convex, more or less compressed lobe. The fingers are stout with a narrow gape; in each finger the reddish brown colour is restricted to the distal half except the cutting teeth, extending back to the base along the cutting edge.
In the ambulatory legs the right first and two detached ones are present. They are coarsely granulated and sparsely hairy with longish brush-like hairs except the dactyli which are covered with dense setae. Only the anterior border of the merus is narrowly crested with a median conical and a terminal small tooth; the crest begins from the subterminal part and becomes rather indistinct towards the distal part from the median tooth. The thoracic sternum is covered with vesicular granules of various size and irregular shape. The first abdominal segment is rather granulated, while the other segments are only punctate with sparse short shaggy hairs. (Takeda & Miyake, 1972c)
Type locality: Port Jackson, New South Wales, Australia.
Range: East China Sea (Takeda & Miyake, 1972c); Australia - Port Jackson (Haswell, 1880b), off Double Island Point, Queensland (Rathbun, 1918b), off Cape Moreton (Griffin, 1972), off Richmond River mouth, N.S.W. (Griffin, 1972).