the species with available descriptions and illustrations of type species we have not been able to comfortably
fit the above mentioned species in to any of those genera. The genus Kongsrudia shows some similarities to
the genus Pyrgulina A. Adams, 1863 with the type species Chrysallida casta A. Adams, 1861 (Subsequent
designation Dall & Bartsch, 1904), but the spiral sculpture in this genus is far less prominent, and the species
of Pyrgulina also tends to be broader in outline. The genus Trabecula Monterosato, 1884 with the type species
Trabecula jeffreysiana Monterosato, 1884 is similar in outline, but lack the marked striations and the axial
sculpture does not reach the base of the shells.