Genus Neojanicus Suter.
Type: Neojanicus perplexus Suter.

Neojanicus wharekuriensis n.sp. (Fig. 8).

Shell very small, flat, oval; apex terminal, large, inflated, smooth, distinctly marked off, and of about one oblique turn. Sculpture of irregular concentric growth-lines and one or two larger, more distant undulations. Margins smooth. Inner surface shining, polished. Muscle-scar not distinct, but can just be made out under microscope, quite similar to that of the genotype. Basal plate absent.

Length, 3.2 mm.; width, 2.8 mm.

Locality, Wharekuri greensands, Waitaki River.

Type in writer's collection.