Solariella tryphenensis: Shell trochiform with an elevated spire. Whorls narrowly shouldered, and with distant spiral cords on spire-whorls, faint close spiral threads on upper base, and strong beaded cords, margining and continuing into a wide umbilical area. Colour pinkish-buff, with sutural radial rectangular reddish-brown blotches. Height 5.75 mm., width 6.25 mm.

aS Zeminolia tryphenensis:
Shell small, depressed turbinate, widely umbilicated. Whorls 5, including a small bulbous protoconch of one whorl. Sculpture consisting of rounded spiral ridges, three on first post-nuclear whorl, four on second and third and five on upper part of bodywhorl. Interspaces each with a small spiral thread and three or four on shoulder. On the upper half of the base there are six closely -spaced spiral ribs about half the strength of those on the spire. On the lower part of the base and within the umbilicus are six strong widely spaced spiral ribs, even more prominent than those on the spire whorls. The postnuclear whorls are crossed by moderately strong slightly retractive axial riblets, strong on spirewhorls and umbilical area but absent from the upper part of the base. The umbilical spirals are crenulated by the axial riblets. Shoulder flattened. Suture impressed. Aperture circular. Peristome almost continuous. Umbilicus about 1/4 of the major diameter, deep and scalar. Colour pale pinkish-buff marked with regularly spaced square reddish-brown blotches radiating from suture and confined to the shoulder. On the base there are an irregularly blotched and ill-defined second series in two rows.
Height, 5.75 mm.; major diameter, 6.25 mm.; minimum diameter, 5.5 mm. Holotype in author's collection.
Habitat, Tryphena Bay in 6 fathoms, Great Barrier Island (dredged by Mr. W. La Roche, 1924).
This species stands nearest to Z. semireticulata Suter, from which it differs in sculpture.

Solariella tryphenensis: New Zealand. North Eastern North Island.