Geological age:
Recent.
Description:
"Testa irregularis, depressa, fere ovalis, antice et postice inaequaliter biolata, corneo-cutea, maculis nigrescentis irregulariter aspersa, concentrice striata, versus apicem lamellis concentrice instructa, cauda curcata, ala longissimaa fisso a cauda disjuncto.
Dimensions; haut., 30 millimétres; larg., 52 millimétres; épaiss., 7 millimétres.
Hab.: Japon." [Jousseaume, 1894: 228.]
Type locality:
"Japon" [Jousseaume, 1894: 228].
Type material illustration:
Habe, 1953 : pl. 9, fig. 3, 4 [black-and-white photos of RV exterior and interior surfaces].