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de Haan, 1833

Carapace broadly subquadrilateral, regions ill-defined, covered with very fine punctulation near the anterior and antero-lateral borders. Antero-lateral borders well convex and arched and with no distinct indentation, the epibranchial angles being produced into an obtuse tooth. The front moderately produced and notched in the middle.
The inner surface of arm very flattish, wrist bears two obtuse teeth at inner angle, followed by four to five bundles of brush-like hairs. Palm with its upper border not sharply crested. (T. Sakai, 1939: 447)

Type locality: Japan.
Range: Japan - (de Haan, 1833), Tokyo Bay (Ortmann, 1893), Enoshima and Sagami Bay (Parisi, 1916), Ajiro, Shimoda and Nanki Shirahama (Sakai, 1939), Sagami Bay (Sakai, 1965b), Sagami Bay, Izu Peninsula, Shima Peninsula, Kii Peninsula and Tosa Bay (Sakai, 1976a), Kushimoto (Miyake, 1983), Misaki, Wagu, Kii Nagashima, Gobo, Kii Minabe, Kushimoto, and Tosa Bay (Muraoka, 1998); Taiwan.

Atergatis subdentatus