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Sakai, 1961

The dorsal surface of the carapace is covered with numerous tubercles which are unequal in size, some being of good size and conical and being thickly covered with tiny granules. The large tubercles are: three on the gastric region side by side, one on the anterior surface of the cardiac region, one at the top of the convex intestinal region, one or two on the hepatic region, and finally six or seven on the branchial region. The gastric, cardiac and intestinal regions are separated by rather deep grooves from the hepatic and branchial regions, which are also clearly separated from each other by a branch groove from the former groove, The intestinal region is markedly convex and is crowned with a tubercle at the summit.
The front is obtusely bidentate, the median sinus is very shallow. The subhepatic ridge is inflated and is marked with a large tubercle near the anterior end, followed by a smaller one. On the lateral margin there are four conical tubercles of good size, the first of which is dorsally deviated. One such tubercle occurs on the postero-lateral border and there are two on the posterior border, one on either side.
The exognath of the outer maxilliped is, as is characteristic of Parilia, much broader than the endognath and is distally expanded; when tightly folded, the outline of the exognath of each outer maxilliped is elliptical. To accommodate these outer maxillipeds, the edges of the pterygostomial ridges are well inflated and cristate, they can be seen in dorsal aspect on either side of the eyes.
The chelipeds are rather slender, the merus is cylindrical and is uniformly covered with studded granules; the granules on carpus and propodus are much smaller. The fingers are distinctly longer than the propodus and are finely denticulate. In the anterior three pairs of ambulatory legs, the anterior border of the merus, carpus and propodus is furnished with a row of spiniform granules. In the last pair, the merus, carpus and propodus are spinulate both on the anterior and the posterior borders, and some additional spinules occur on the upper surface. (Sakai, 1976)

Type locality: Tosa Bay, Japan.
Range: Japan - Tosa Bay (Sakai, 1961, 1976).

Parilia tuberculata