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Sakai, 1939

A single male specimen was examined, compared with a large series of specimens of Gaetice depressus from various localities in Japan. The carapace resembles that of Gaetice depressus but the supraorbital borders are somewhat more oblique, the two antero-lateral teeth are sharper and the third tooth much smaller. The frontal margin is as in G. depressus but the eyestalks are much thicker and stouter, the stridulating organ composed of about eight elongate tubercles; in adult male of depressus it is composed of about 13 tubercles as aforementioned.
The wrist of chelipeds has a small spine at inner angle as in the case of the young of Gaetice depressus. The fingers are characteristic, being very deeply hollowed at tip, forming a very perfect hoof; in G. depressus, they are only very slightly hollowed and not forming a hoof.
Besides Gaetice depressus, Gaetice convexiusculus Stimpson 1858 was early reported by Stimpson from Loo Choo, but his species is now admitted as a synonym of G. depressus; according to Stimpson's figure, the fingers of his species are not hollowed and agree with those of G. depressus. The present species is, therefore, recognized to be the second species of this genus. (T. Sakai, 1939: 678)

Type locality: Okinawa, Japan.
Range: Japan - Okinawa (Sakai, 1939, 1976).

Gaetice ungulatus